312 Area Code

Chicago, Illinois

Chicago, Illinois is the largest city covered by the 312 Area Code

Current Time

Central Time Zone

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312 Area Code Overview & Map

The 312 area code is a telephone area code serving Chicago, Illinois, and some of its surrounding areas. It is part of the North American Numbering Plan (NANP) and was one of the original area codes established in 1947. The 312 area code was later split, and new area codes were introduced to accommodate the growing demand for phone numbers in the region. Despite this, 312 remains closely associated with the city of Chicago and is recognized as one of the iconic area codes in the United States. Over time, additional area codes, such as 773 and 872, have been introduced to meet the expanding communication needs of the Chicago metropolitan area.

When was the 312 Area Code created?

The 312 area code was first put into service in 1947, by the North American Numbering Plan Administration (NANPA). Learn more about the US Area Code System

Where is the 312 Area Code located?

The 312 area code serves Chicago, Illinois and the surrounding areas.

Overlays

The 312 is an overlay for the 872 area code(s), and serves the same area. Learn about overlays

312 Area Code Map

312 Area Code Map

Cities in the 312 Area Code

The 312 area code includes 1 cites in Illinois.

City Population % in Area Code
Chicago, IL 2,695,598 8%

312 Area Code NXX Prefixes

The 312 Area Code (NPA Code) has 783 prefixes (NXX Code). An NXX prefix, also known as a central office code or exchange code, is the three-digit code that follows the area code in a North American telephone number. Learn about NXX Prefixes

Area Code Prefix Usage Carrier Rate Center
312 200 Landline Metropcs, Inc. Chicago
312 201 Landline Illinois Bell Tel Co Chicago
312 202 Landline Illinois Bell Tel Co Chicago
312 203 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 204 Landline Illinois Bell Tel Co Chicago
312 205 Landline Mcimetro Access Transmission Services LLC Chicago
312 206 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 207 Landline Illinois Bell Tel Co Chicago
312 208 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 209 Wireless Cellco Partnership DBA Verizon Wireless - Il Northbrook
312 210 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 212 Landline Illinois Bell Tel Co Chicago
312 213 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 214 Landline Illinois Bell Tel Co Chicago
312 215 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 216 Landline First Communications, LLC - Il Chicago
312 217 Landline Sprint Spectrum, L.p. Chicago
312 218 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 219 Landline Bandwidth.com Clec, LLC - Il Chicago
312 220 Landline Illinois Bell Tel Co Chicago
312 221 Landline Sprint Spectrum, L.p. Chicago
312 222 Landline Illinois Bell Tel Co Chicago
312 223 Landline Illinois Bell Tel Co Chicago
312 224 Landline Level 3 Communications, LLC - Il Chicago
312 225 Landline Illinois Bell Tel Co Chicago
312 226 Landline Illinois Bell Tel Co Chicago
312 227 Landline Illinois Bell Tel Co Chicago
312 228 Landline Illinois Bell Tel Co Chicago
312 229 Landline Illinois Bell Tel Co Chicago
312 230 Landline Illinois Bell Tel Co Chicago
312 231 Wireless New Cingular Wireless Pcs, LLC - Il Roselle
312 232 Landline American Messaging Services, LLC Chicago
312 233 Landline Illinois Bell Tel Co Chicago
312 234 Landline Illinois Bell Tel Co Chicago
312 235 Landline Illinois Bell Tel Co Chicago
312 236 Landline Illinois Bell Tel Co Chicago
312 237 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 238 Landline Level 3 Communications, LLC - Il Chicago
312 239 Landline AT&T - Local Chicago
312 240 Landline Illinois Bell Tel Co Chicago
312 241 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 242 Landline Teleport Communications America, LLC - Il Chicago
312 243 Landline Illinois Bell Tel Co Chicago
312 244 Landline Illinois Bell Tel Co Chicago
312 245 Landline Illinois Bell Tel Co Chicago
312 246 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 247 Landline First Communications, LLC - Il Chicago
312 248 Landline Metropcs, Inc. Chicago
312 249 Wireless Usa Mobility Wireless, Inc. Chicago
312 250 Wireless Usa Mobility Wireless, Inc. Chicago
312 251 Landline Illinois Bell Tel Co Chicago
312 252 Landline Mcimetro Access Transmission Services LLC Chicago
312 253 Landline Mcimetro Access Transmission Services LLC Chicago
312 254 Landline Mcimetro Access Transmission Services LLC Chicago
312 255 Landline Illinois Bell Tel Co Chicago
312 256 Landline Mcimetro Access Transmission Services LLC Chicago
312 257 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 258 Landline Illinois Bell Tel Co Chicago
312 259 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 260 Landline Mcimetro Access Transmission Services LLC Chicago
312 261 Landline Level 3 Communications, LLC - Il Chicago
312 262 Landline Mcimetro Access Transmission Services LLC Chicago
312 263 Landline Illinois Bell Tel Co Chicago
312 264 Landline Level 3 Communications, LLC - Il Chicago
312 265 Landline Access One, Inc. - Il Chicago
312 266 Landline Illinois Bell Tel Co Chicago
312 267 Landline Illinois Bell Tel Co Chicago
312 268 Landline Level 3 Communications, LLC - Il Chicago
312 269 Landline Illinois Bell Tel Co Chicago
312 270 Landline Metropcs, Inc. Chicago
312 271 Wireless Usa Mobility Wireless, Inc. Chicago
312 272 Wireless Usa Mobility Wireless, Inc. Chicago
312 273 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 274 Landline Illinois Bell Tel Co Chicago
312 275 Landline Mcimetro Access Transmission Services LLC Chicago
312 276 Landline Mcimetro Access Transmission Services LLC Chicago
312 277 Landline Mcimetro Access Transmission Services LLC Chicago
312 278 Landline Level 3 Communications, LLC - Il Chicago
312 279 Landline Mcimetro Access Transmission Services LLC Chicago
312 280 Landline Illinois Bell Tel Co Chicago
312 281 Landline Global Crossing Local Services, Inc. - Il Chicago
312 282 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 283 Landline Global Crossing Local Services, Inc. - Il Chicago
312 284 Landline Xo Illinois, Inc. Chicago
312 285 Landline Sprint Spectrum, L.p. Chicago
312 286 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 287 Landline Sprint Spectrum, L.p. Chicago
312 288 Landline Mcimetro Access Transmission Services LLC Chicago
312 289 Wireless Usa Mobility Wireless, Inc. Chicago
312 290 Wireless Usa Mobility Wireless, Inc. Chicago
312 291 Landline Illinois Bell Tel Co Chicago
312 292 Landline Bandwidth.com Clec, LLC - Il Chicago
312 293 Landline Illinois Bell Tel Co Chicago
312 294 Landline Illinois Bell Tel Co Chicago
312 295 Wireless Usa Mobility Wireless, Inc. La Grange
312 296 Landline Sprint Spectrum, L.p. Chicago
312 297 Landline Illinois Bell Tel Co Chicago
312 298 Landline Rcn Telecom Services Of Illinios, Inc. - Il Chicago
312 299 Wireless Usa Mobility Wireless, Inc. Chicago
312 300 Landline Level 3 Communications, LLC - Il Chicago
312 301 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 302 Landline Illinois Bell Tel Co Chicago
312 303 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 304 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 305 Wireless Cellco Partnership DBA Verizon Wireless - Il Northbrook
312 306 Landline Illinois Bell Tel Co Chicago
312 307 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 308 Landline Illinois Bell Tel Co Chicago
312 309 Landline Illinois Bell Tel Co Chicago
312 310 Wireless Cellco Partnership DBA Verizon Wireless - Il Northbrook
312 312 Landline Onvoy, LLC Chicago
312 313 Landline Onvoy, LLC Chicago
312 314 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 315 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 316 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 317 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 318 Wireless Cellco Partnership DBA Verizon Wireless - Il La Grange
312 319 Landline Mcimetro Access Transmission Services LLC Chicago
312 320 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 321 Landline Illinois Bell Tel Co Chicago
312 322 Landline Illinois Bell Tel Co Chicago
312 323 Landline American Messaging Services, LLC Chicago
312 324 Landline Level 3 Communications, LLC - Il Chicago
312 325 Landline Illinois Bell Tel Co Chicago
312 326 Landline Illinois Bell Tel Co Chicago
312 327 Landline Xo Illinois, Inc. Chicago
312 328 Landline Illinois Bell Tel Co Chicago
312 329 Landline Illinois Bell Tel Co Chicago
312 330 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 331 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 332 Landline Illinois Bell Tel Co Chicago
312 333 Landline American Messaging Services, LLC Chicago
312 334 Landline First Communications, LLC - Il Chicago
312 335 Landline Illinois Bell Tel Co Chicago
312 336 Landline Illinois Bell Tel Co Chicago
312 337 Landline Illinois Bell Tel Co Chicago
312 338 Landline Illinois Bell Tel Co Chicago
312 339 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 340 Landline T-Mobile USA, Inc. Chicago
312 341 Landline Illinois Bell Tel Co Chicago
312 342 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 343 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 344 Landline Illinois Bell Tel Co Chicago
312 345 Landline Illinois Bell Tel Co Chicago
312 346 Landline Illinois Bell Tel Co Chicago
312 347 Landline Illinois Bell Tel Co Chicago
312 348 Landline Onvoy, LLC Chicago
312 349 Wireless Usa Mobility Wireless, Inc. Chicago
312 350 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 351 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 352 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 353 Landline Illinois Bell Tel Co Chicago
312 354 Wireless New Cingular Wireless Pcs, LLC - Il Roselle
312 355 Landline Illinois Bell Tel Co Chicago
312 356 Landline Illinois Bell Tel Co Chicago
312 357 Landline Illinois Bell Tel Co Chicago
312 358 Landline T-Mobile USA, Inc. Chicago
312 359 Wireless Usa Mobility Wireless, Inc. Chicago
312 360 Landline Illinois Bell Tel Co Chicago
312 361 Landline Illinois Bell Tel Co Chicago
312 362 Landline Illinois Bell Tel Co Chicago
312 363 Landline Rcn Telecom Services Of Illinios, Inc. - Il Chicago
312 364 Landline Illinois Bell Tel Co Chicago
312 365 Wireless Usa Mobility Wireless, Inc. Chicago
312 366 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 367 Wireless Usa Mobility Wireless, Inc. La Grange
312 368 Landline Illinois Bell Tel Co Chicago
312 369 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 370 Wireless Usa Mobility Wireless, Inc. Chicago
312 371 Landline Sprint Spectrum, L.p. Chicago
312 372 Landline Illinois Bell Tel Co Chicago
312 373 Landline Level 3 Communications, LLC - Il Chicago
312 374 Landline Illinois Bell Tel Co Chicago
312 375 Landline T-Mobile USA, Inc. Chicago
312 376 Landline Onvoy, LLC Chicago
312 377 Landline Xo Illinois, Inc. Chicago
312 378 Wireless Usa Mobility Wireless, Inc. Chicago
312 379 Landline Ovation Communications Of Illinois, Inc. Chicago
312 380 Landline Illinois Bell Tel Co Chicago
312 381 Landline Illinois Bell Tel Co Chicago
312 382 Landline Illinois Bell Tel Co Chicago
312 383 Landline Teleport Communications America, LLC - Il Chicago
312 384 Landline Illinois Bell Tel Co Chicago
312 385 Landline Illinois Bell Tel Co Chicago
312 386 Landline Illinois Bell Tel Co Chicago
312 387 Wireless Usa Mobility Wireless, Inc. Chicago
312 388 Landline Sprint Spectrum, L.p. Chicago
312 389 Wireless Usa Mobility Wireless, Inc. Chicago
312 390 Landline American Messaging Services, LLC Chicago
312 391 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 392 Landline Onvoy, LLC Chicago
312 393 Landline American Messaging Services, LLC Chicago
312 394 Landline Illinois Bell Tel Co Chicago
312 395 Landline AT&T - Local Chicago
312 396 Landline Illinois Bell Tel Co Chicago
312 397 Landline Illinois Bell Tel Co Chicago
312 398 Wireless Usa Mobility Wireless, Inc. Chicago
312 399 Landline Sprint Spectrum, L.p. Chicago
312 400 Landline American Messaging Services, LLC Chicago
312 401 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 402 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 403 Wireless Cellco Partnership DBA Verizon Wireless - Il La Grange
312 404 Landline T-Mobile USA, Inc. Chicago
312 405 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 406 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 407 Landline Illinois Bell Tel Co Chicago
312 408 Landline Illinois Bell Tel Co Chicago
312 409 Landline Illinois Bell Tel Co Chicago
312 410 Landline Illinois Bell Tel Co Chicago
312 412 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 413 Landline Illinois Bell Tel Co Chicago
312 414 Landline Vonage America LLC Chicago
312 415 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 416 Landline Mcimetro Access Transmission Services LLC - Il Chicago
312 417 Landline Illinois Bell Tel Co Chicago
312 418 Wireless Usa Mobility Wireless, Inc. Chicago
312 419 Landline Illinois Bell Tel Co Chicago
312 420 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 421 Landline Illinois Bell Tel Co Chicago
312 422 Landline Illinois Bell Tel Co Chicago
312 423 Landline Level 3 Communications, LLC - Il Chicago
312 424 Landline Illinois Bell Tel Co Chicago
312 425 Landline Illinois Bell Tel Co Chicago
312 426 Wireless Usa Mobility Wireless, Inc. Chicago
312 427 Landline Illinois Bell Tel Co Chicago
312 428 Landline Level 3 Communications, LLC - Il Chicago
312 429 Landline Global Crossing Local Services, Inc. - Il Chicago
312 430 Landline Illinois Bell Tel Co Chicago
312 431 Landline Illinois Bell Tel Co Chicago
312 432 Landline Illinois Bell Tel Co Chicago
312 433 Landline Illinois Bell Tel Co Chicago
312 434 Landline Sprint Spectrum, L.p. Chicago
312 435 Landline Illinois Bell Tel Co Chicago
312 436 Landline Illinois Bell Tel Co Chicago
312 437 Landline Sprint Spectrum, L.p. Chicago
312 438 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 439 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 440 Landline Illinois Bell Tel Co Chicago
312 441 Landline Illinois Bell Tel Co Chicago
312 442 Landline Illinois Bell Tel Co Chicago
312 443 Landline Illinois Bell Tel Co Chicago
312 444 Landline Illinois Bell Tel Co Chicago
312 445 Landline Illinois Bell Tel Co Chicago
312 446 Landline Sprint Spectrum, L.p. Chicago
312 447 Landline Illinois Bell Tel Co Chicago
312 448 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 449 Landline American Messaging Services, LLC Chicago
312 450 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 451 Landline T-Mobile USA, Inc. Chicago
312 452 Landline American Messaging Services, LLC Chicago
312 453 Landline Mcimetro Access Transmission Services LLC - Il Chicago
312 454 Landline Illinois Bell Tel Co Chicago
312 455 Landline Illinois Bell Tel Co Chicago
312 456 Landline Illinois Bell Tel Co Chicago
312 457 Landline American Messaging Services, LLC Chicago
312 458 Landline Illinois Bell Tel Co Chicago
312 459 Landline T-Mobile USA, Inc. Chicago
312 460 Landline Illinois Bell Tel Co Chicago
312 461 Landline Illinois Bell Tel Co Chicago
312 462 Landline Illinois Bell Tel Co Chicago
312 463 Landline Illinois Bell Tel Co Chicago
312 464 Landline Illinois Bell Tel Co Chicago
312 465 Landline Us Xchange Of Illinois LLC DBA Choice One Comm Il Chicago
312 466 Landline Illinois Bell Tel Co Chicago
312 467 Landline Illinois Bell Tel Co Chicago
312 468 Landline T-Mobile USA, Inc. Chicago
312 469 Landline Illinois Bell Tel Co Chicago
312 470 Landline Mcimetro Access Transmission Services LLC Chicago
312 471 Landline Mcimetro Access Transmission Services LLC Chicago
312 472 Landline Illinois Bell Tel Co Chicago
312 473 Landline Ymax Communications Corp. - Il Chicago
312 474 Landline Illinois Bell Tel Co Chicago
312 475 Landline Illinois Bell Tel Co Chicago
312 476 Landline Sprint Spectrum, L.p. Chicago
312 477 Landline Level 3 Communications, LLC - Il Chicago
312 478 Landline T-Mobile USA, Inc. Chicago
312 479 Landline AT&T - Local Chicago
312 480 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 481 Landline Metropcs, Inc. Chicago
312 482 Landline Illinois Bell Tel Co Chicago
312 483 Landline T-Mobile USA, Inc. Chicago
312 484 Wireless Usa Mobility Wireless, Inc. Chicago
312 485 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 486 Landline Mcimetro Access Transmission Services LLC - Il Chicago
312 487 Landline Metropcs, Inc. Chicago
312 488 Landline Level 3 Communications, LLC - Il Chicago
312 489 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 490 Wireless Usa Mobility Wireless, Inc. Chicago
312 491 Landline Illinois Bell Tel Co Chicago
312 492 Landline Illinois Bell Tel Co Chicago
312 493 Landline T-Mobile USA, Inc. Chicago
312 494 Landline Illinois Bell Tel Co Chicago
312 495 Wireless Usa Mobility Wireless, Inc. Chicago
312 496 Landline Illinois Bell Tel Co Chicago
312 497 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 498 Landline Sprint Spectrum, L.p. Chicago
312 499 Landline Illinois Bell Tel Co Chicago
312 500 Landline Onvoy, LLC Chicago
312 501 Wireless Cellco Partnership DBA Verizon Wireless - Il La Grange
312 502 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 503 Landline Teleport Communications America, LLC - Il Chicago
312 504 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 505 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 506 Landline First Communications, LLC Chicago
312 507 Landline Illinois Bell Tel Co Chicago
312 508 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 509 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 510 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 512 Wireless Usa Mobility Wireless, Inc. Chicago
312 513 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 514 Landline American Messaging Services, LLC Chicago
312 515 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 516 Landline Illinois Bell Tel Co Chicago
312 517 Landline Mcimetro Access Transmission Services LLC Chicago
312 518 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 519 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 520 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 521 Landline AT&T - Local Chicago
312 522 Landline T-Mobile USA, Inc. Chicago
312 523 Landline Sprint Spectrum, L.p. Chicago
312 524 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 525 Landline Mcimetro Access Transmission Services LLC Chicago
312 526 Landline Illinois Bell Tel Co Chicago
312 527 Landline Illinois Bell Tel Co Chicago
312 528 Landline Illinois Bell Tel Co Chicago
312 529 Landline AT&T - Local Chicago
312 530 Landline Stratus Networks Chicago
312 531 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 532 Landline T-Mobile USA, Inc. Chicago
312 533 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 534 Landline Illinois Bell Tel Co Chicago
312 535 Landline Bandwidth.com Clec, LLC - Il Chicago
312 536 Landline T-Mobile USA, Inc. Chicago
312 537 Landline Illinois Bell Tel Co Chicago
312 538 Landline Metropcs, Inc. Chicago
312 539 Landline T-Mobile USA, Inc. Chicago
312 540 Landline Illinois Bell Tel Co Chicago
312 541 Landline Illinois Bell Tel Co Chicago
312 542 Landline Illinois Bell Tel Co Chicago
312 543 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 544 Landline Illinois Bell Tel Co Chicago
312 545 Landline Sprint Spectrum, L.p. Chicago
312 546 Landline Level 3 Communications, LLC - Il Chicago
312 547 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 548 Landline Level 3 Communications, LLC - Il Chicago
312 549 Landline Teleport Communications America, LLC - Il Chicago
312 550 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 551 Landline Illinois Bell Tel Co Chicago
312 552 Landline Illinois Bell Tel Co Chicago
312 553 Landline Illinois Bell Tel Co Chicago
312 554 Landline Illinois Bell Tel Co Chicago
312 556 Landline Illinois Bell Tel Co Chicago
312 557 Landline Illinois Bell Tel Co Chicago
312 558 Landline Illinois Bell Tel Co Chicago
312 559 Landline Illinois Bell Tel Co Chicago
312 560 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 561 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 562 Wireless Usa Mobility Wireless, Inc. Chicago
312 563 Landline Illinois Bell Tel Co Chicago
312 564 Landline First Communications, LLC Chicago
312 565 Landline Illinois Bell Tel Co Chicago
312 566 Landline Illinois Bell Tel Co Chicago
312 567 Landline Illinois Bell Tel Co Chicago
312 568 Landline Illinois Bell Tel Co Chicago
312 569 Landline Illinois Bell Tel Co Chicago
312 570 Landline Illinois Bell Tel Co Chicago
312 571 Wireless Usa Mobility Wireless, Inc. Chicago
312 572 Landline Illinois Bell Tel Co Chicago
312 573 Landline Illinois Bell Tel Co Chicago
312 574 Landline Illinois Bell Tel Co Chicago
312 575 Landline Illinois Bell Tel Co Chicago
312 576 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 577 Landline Mcimetro Access Transmission Services LLC - Il Chicago
312 578 Landline Illinois Bell Tel Co Chicago
312 579 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 580 Landline Illinois Bell Tel Co Chicago
312 581 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 582 Landline Illinois Bell Tel Co Chicago
312 583 Landline Illinois Bell Tel Co Chicago
312 584 Landline Voip Innovations, LLC Chicago
312 585 Landline Mcimetro Access Transmission Services LLC Chicago
312 586 Landline Onvoy, LLC Chicago
312 587 Landline Illinois Bell Tel Co Chicago
312 588 Landline Illinois Bell Tel Co Chicago
312 589 Landline Illinois Bell Tel Co Chicago
312 590 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 591 Landline Illinois Bell Tel Co Chicago
312 592 Landline Illinois Bell Tel Co Chicago
312 593 Landline T-Mobile USA, Inc. Chicago
312 594 Landline Mcimetro Access Transmission Services LLC Chicago
312 595 Landline Illinois Bell Tel Co Chicago
312 596 Landline Teleport Communications America, LLC - Il Chicago
312 597 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 598 Landline Onvoy, LLC Chicago
312 599 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 600 Landline Onvoy, LLC Chicago
312 601 Landline Mcimetro Access Transmission Services LLC Chicago
312 602 Landline Level 3 Communications, LLC - Il Chicago
312 603 Landline Illinois Bell Tel Co Chicago
312 604 Landline Xo Illinois, Inc. Chicago
312 605 Landline Ovation Communications Of Illinois, Inc. Chicago
312 606 Landline Illinois Bell Tel Co Chicago
312 607 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 608 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 609 Landline Illinois Bell Tel Co Chicago
312 610 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 612 Landline Illinois Bell Tel Co Chicago
312 613 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 614 Landline Illinois Bell Tel Co Chicago
312 615 Wireless New Cingular Wireless Pcs, LLC - Il Wheeling
312 616 Landline Illinois Bell Tel Co Chicago
312 617 Landline Sprint Spectrum, L.p. Chicago
312 618 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 619 Landline T-Mobile USA, Inc. Chicago
312 620 Landline Bandwidth.com Clec, LLC - Il Chicago
312 621 Landline Illinois Bell Tel Co Chicago
312 622 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 623 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 624 Landline Rcn Telecom Services Of Illinios, Inc. - Il Chicago
312 625 Landline Level 3 Communications, LLC - Il Chicago
312 626 Landline Onvoy, LLC Chicago
312 627 Landline Illinois Bell Tel Co Chicago
312 628 Landline Xo Illinois, Inc. Chicago
312 629 Landline Illinois Bell Tel Co Chicago
312 630 Landline Illinois Bell Tel Co Chicago
312 631 Landline Centurylink Communications, LLC Chicago
312 632 Landline Illinois Bell Tel Co Chicago
312 633 Landline Illinois Bell Tel Co Chicago
312 634 Landline Illinois Bell Tel Co Chicago
312 635 Landline Global Crossing Local Services, Inc. - Il Chicago
312 636 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 637 Landline Level 3 Communications, LLC - Il Chicago
312 638 Landline Level 3 Communications, LLC - Il Chicago
312 639 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 640 Landline Illinois Bell Tel Co Chicago
312 641 Landline Illinois Bell Tel Co Chicago
312 642 Landline Illinois Bell Tel Co Chicago
312 643 Landline Rcn Telecom Services Of Illinios, Inc. - Il Chicago
312 644 Landline Illinois Bell Tel Co Chicago
312 645 Landline Illinois Bell Tel Co Chicago
312 646 Landline Level 3 Communications, LLC - Il Chicago
312 647 Landline T-Mobile USA, Inc. Chicago
312 648 Landline Illinois Bell Tel Co Chicago
312 649 Landline Illinois Bell Tel Co Chicago
312 650 Landline Rcn Telecom Services Of Illinios, Inc. - Il Chicago
312 651 Landline Illinois Bell Tel Co Chicago
312 652 Landline Illinois Bell Tel Co Chicago
312 653 Landline Illinois Bell Tel Co Chicago
312 654 Landline Illinois Bell Tel Co Chicago
312 655 Landline Illinois Bell Tel Co Chicago
312 656 Landline Sprint Spectrum, L.p. Chicago
312 657 Wireless Usa Mobility Wireless, Inc. Chicago
312 658 Landline Illinois Bell Tel Co Chicago
312 659 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 660 Landline Teleport Communications America, LLC - Il Chicago
312 661 Landline Illinois Bell Tel Co Chicago
312 662 Landline Illinois Bell Tel Co Chicago
312 663 Landline Illinois Bell Tel Co Chicago
312 664 Landline Illinois Bell Tel Co Chicago
312 665 Landline Teleport Communications America, LLC - Il Chicago
312 666 Landline Illinois Bell Tel Co Chicago
312 667 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 668 Wireless Csc Wireless, LLC Chicago
312 669 Landline Illinois Bell Tel Co Chicago
312 670 Landline Illinois Bell Tel Co Chicago
312 671 Landline Sprint Spectrum, L.p. Chicago
312 672 Landline Illinois Bell Tel Co Chicago
312 673 Landline First Communications, LLC - Il Chicago
312 674 Landline Illinois Bell Tel Co Chicago
312 675 Landline Illinois Bell Tel Co Chicago
312 676 Landline First Communications, LLC - Il Chicago
312 677 Wireless Usa Mobility Wireless, Inc. Chicago
312 678 Landline T-Mobile USA, Inc. Chicago
312 679 Landline American Messaging Services, LLC Chicago
312 680 Landline Onvoy, LLC Chicago
312 681 Landline Illinois Bell Tel Co Chicago
312 682 Landline Nuso, LLC Chicago
312 683 Landline Illinois Bell Tel Co Chicago
312 684 Landline T-Mobile USA, Inc. Chicago
312 685 Landline Sprint Spectrum, L.p. Chicago
312 686 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 687 Landline T-Mobile USA, Inc. Chicago
312 688 Wireless Usa Mobility Wireless, Inc. Chicago
312 689 Landline American Messaging Services, LLC Chicago
312 690 Landline Rclec, Inc. - Il Chicago
312 691 Landline Indiana Paging Network, Inc. Chicago
312 692 Landline Illinois Bell Tel Co Chicago
312 693 Landline Illinois Bell Tel Co Chicago
312 694 Landline Illinois Bell Tel Co Chicago
312 695 Landline Illinois Bell Tel Co Chicago
312 696 Landline Illinois Bell Tel Co Chicago
312 697 Landline Illinois Bell Tel Co Chicago
312 698 Landline Level 3 Communications, LLC - Il Chicago
312 699 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 701 Landline Illinois Bell Tel Co Chicago
312 702 Landline Mcimetro Access Transmission Services LLC Chicago
312 703 Landline Illinois Bell Tel Co Chicago
312 704 Landline Illinois Bell Tel Co Chicago
312 705 Landline Teleport Communications America, LLC - Il Chicago
312 706 Landline Teleport Communications America, LLC - Il Chicago
312 707 Landline Illinois Bell Tel Co Chicago
312 709 Landline T-Mobile USA, Inc. Chicago
312 710 Landline Illinois Bell Tel Co Chicago
312 712 Landline Illinois Bell Tel Co Chicago
312 713 Landline American Messaging Services, LLC Chicago
312 714 Landline Illinois Bell Tel Co Chicago
312 715 Landline Illinois Bell Tel Co Chicago
312 716 Landline Illinois Bell Tel Co Chicago
312 717 Wireless Usa Mobility Wireless, Inc. La Grange
312 718 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 719 Landline Sprint Spectrum, L.p. Chicago
312 720 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 721 Landline T-Mobile USA, Inc. Chicago
312 722 Landline Us Xchange Of Illinois LLC DBA Choice One Comm Il Chicago
312 723 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 724 Landline Bandwidth.com Clec, LLC - Il Chicago
312 725 Landline Bandwidth.com Clec, LLC - Il Chicago
312 726 Landline Illinois Bell Tel Co Chicago
312 727 Landline Illinois Bell Tel Co Chicago
312 728 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 729 Landline Illinois Bell Tel Co Chicago
312 730 Landline AT&T - Local Chicago
312 731 Landline T-Mobile USA, Inc. Chicago
312 732 Landline Illinois Bell Tel Co Chicago
312 733 Landline Illinois Bell Tel Co Chicago
312 734 Landline Teleport Communications America, LLC - Il Chicago
312 735 Landline Sprint Spectrum, L.p. Chicago
312 736 Landline Teleport Communications America, LLC - Il Chicago
312 737 Landline Illinois Bell Tel Co Chicago
312 738 Landline Illinois Bell Tel Co Chicago
312 739 Landline Illinois Bell Tel Co Chicago
312 740 Landline American Messaging Services, LLC Chicago
312 741 Landline Ovation Communications Of Illinois, Inc. Chicago
312 742 Landline Illinois Bell Tel Co Chicago
312 743 Landline Illinois Bell Tel Co Chicago
312 744 Landline Illinois Bell Tel Co Chicago
312 745 Landline Illinois Bell Tel Co Chicago
312 746 Landline Illinois Bell Tel Co Chicago
312 747 Landline Illinois Bell Tel Co Chicago
312 749 Wireless New Cingular Wireless Pcs, LLC - Il Hinsdale
312 750 Landline Illinois Bell Tel Co Chicago
312 751 Landline Illinois Bell Tel Co Chicago
312 752 Landline Level 3 Communications, LLC - Il Chicago
312 753 Landline Rcn Telecom Services Of Illinios, Inc. - Il Chicago
312 754 Landline Level 3 Telecom Of Illinois, LLC - Il Chicago
312 755 Landline Illinois Bell Tel Co Chicago
312 756 Landline Illinois Bell Tel Co Chicago
312 757 Landline Getgo Communications LLC - Il Chicago
312 758 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 759 Landline Illinois Bell Tel Co Chicago
312 760 Landline American Messaging Services, LLC Chicago
312 761 Landline Telengy LLC Chicago
312 762 Landline Illinois Bell Tel Co Chicago
312 763 Landline Comcast Ip Phone, LLC Chicago
312 764 Landline Teleport Communications America, LLC - Il Chicago
312 765 Landline Illinois Bell Tel Co Chicago
312 766 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 767 Landline Bandwidth.com Clec, LLC - Il Chicago
312 768 Landline AT&T - Local Chicago
312 769 Landline Indiana Paging Network, Inc. Chicago
312 770 Landline Illinois Bell Tel Co Chicago
312 771 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 772 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 774 Landline T-Mobile USA, Inc. Chicago
312 775 Landline Illinois Bell Tel Co Chicago
312 776 Landline T-Mobile USA, Inc. Chicago
312 777 Landline Teleport Communications America, LLC - Il Chicago
312 778 Landline Onvoy, LLC Chicago
312 779 Landline Onvoy, LLC Chicago
312 780 Landline Mcimetro Access Transmission Services LLC - Il Chicago
312 781 Landline Illinois Bell Tel Co Chicago
312 782 Landline Illinois Bell Tel Co Chicago
312 783 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 784 Landline First Communications, LLC - Il Chicago
312 785 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 786 Landline Illinois Bell Tel Co Chicago
312 787 Landline Illinois Bell Tel Co Chicago
312 788 Landline Illinois Bell Tel Co Chicago
312 789 Landline Illinois Bell Tel Co Chicago
312 790 Landline Illinois Bell Tel Co Chicago
312 791 Landline Illinois Bell Tel Co Chicago
312 792 Landline Mcimetro Access Transmission Services LLC Chicago
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312 795 Landline Illinois Bell Tel Co Chicago
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312 797 Landline Illinois Bell Tel Co Chicago
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312 799 Landline Illinois Bell Tel Co Chicago
312 800 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 801 Landline Nuso, LLC Chicago
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312 803 Landline Mcimetro Access Transmission Services LLC - Il Chicago
312 804 Landline T-Mobile USA, Inc. Chicago
312 805 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
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312 809 Landline Mcimetro Access Transmission Services LLC Chicago
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312 814 Landline Illinois Bell Tel Co Chicago
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312 817 Landline Illinois Bell Tel Co Chicago
312 818 Landline T-Mobile USA, Inc. Chicago
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312 820 Landline Onvoy, LLC Chicago
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312 822 Landline Illinois Bell Tel Co Chicago
312 823 Landline Illinois Bell Tel Co Chicago
312 824 Landline Mcimetro Access Transmission Services LLC Chicago
312 825 Landline T-Mobile USA, Inc. Chicago
312 826 Landline T-Mobile USA, Inc. Chicago
312 827 Landline Illinois Bell Tel Co Chicago
312 828 Landline Illinois Bell Tel Co Chicago
312 829 Landline Illinois Bell Tel Co Chicago
312 830 Wireless Usa Mobility Wireless, Inc. Chicago
312 831 Landline Illinois Bell Tel Co Chicago
312 832 Landline Illinois Bell Tel Co Chicago
312 833 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
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312 835 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 836 Landline Illinois Bell Tel Co Chicago
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312 838 Landline T-Mobile USA, Inc. Chicago
312 839 Landline American Messaging Services, LLC Chicago
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312 850 Landline Illinois Bell Tel Co Chicago
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312 855 Landline Illinois Bell Tel Co Chicago
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312 858 Landline Rclec, Inc. - Il Chicago
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312 863 Landline Ovation Communications Of Illinois, Inc. Chicago
312 864 Landline Illinois Bell Tel Co Chicago
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312 866 Landline T-Mobile USA, Inc. Chicago
312 867 Landline Illinois Bell Tel Co Chicago
312 868 Landline Bandwidth.com Clec, LLC - Il Chicago
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312 871 Landline Mcimetro Access Transmission Services LLC Chicago
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312 873 Landline Mcimetro Access Transmission Services LLC - Il Chicago
312 874 Landline T-Mobile USA, Inc. Chicago
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312 876 Landline Illinois Bell Tel Co Chicago
312 877 Landline AT&T Corp. Chicago
312 878 Landline Peerless Network Of Illinois, LLC - Il Chicago
312 879 Landline Illinois Bell Tel Co Chicago
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312 881 Landline Ovation Communications Of Illinois, Inc. Chicago
312 882 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
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312 884 Landline Ovation Communications Of Illinois, Inc. Chicago
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312 886 Landline Illinois Bell Tel Co Chicago
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312 889 Landline Teleport Communications America, LLC - Il Chicago
312 890 Landline Sprint Spectrum, L.p. Chicago
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312 894 Landline Mcimetro Access Transmission Services LLC Chicago
312 895 Landline Level 3 Communications, LLC - Il Chicago
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312 897 Landline Mcimetro Access Transmission Services LLC Chicago
312 898 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 899 Landline Illinois Bell Tel Co Chicago
312 900 Landline Fractel, LLC Chicago
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312 905 Landline Illinois Bell Tel Co Chicago
312 906 Landline Illinois Bell Tel Co Chicago
312 907 Landline Sprint Spectrum, L.p. Chicago
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312 909 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
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312 913 Landline Illinois Bell Tel Co Chicago
312 914 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
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312 916 Landline American Messaging Services, LLC Chicago
312 917 Landline Illinois Bell Tel Co Chicago
312 918 Landline T-Mobile USA, Inc. Chicago
312 919 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 920 Landline Illinois Bell Tel Co Chicago
312 921 Landline Illinois Bell Tel Co Chicago
312 922 Landline Illinois Bell Tel Co Chicago
312 923 Landline Illinois Bell Tel Co Chicago
312 924 Landline Paetec Communications, Inc. - Il Chicago
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312 927 Landline T-Mobile USA, Inc. Chicago
312 928 Landline Illinois Bell Tel Co Chicago
312 929 Landline T-Mobile USA, Inc. Chicago
312 930 Landline Illinois Bell Tel Co Chicago
312 931 Landline Illinois Bell Tel Co Chicago
312 932 Landline Illinois Bell Tel Co Chicago
312 933 Landline Sprint Spectrum, L.p. Chicago
312 934 Landline T-Mobile USA, Inc. Chicago
312 935 Landline Illinois Bell Tel Co Chicago
312 936 Landline Illinois Bell Tel Co Chicago
312 937 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 938 Landline Illinois Bell Tel Co Chicago
312 939 Landline Illinois Bell Tel Co Chicago
312 940 Landline Peerless Network Of Illinois, LLC - Il Chicago
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312 944 Landline Illinois Bell Tel Co Chicago
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312 957 Landline Illinois Bell Tel Co Chicago
312 960 Landline Illinois Bell Tel Co Chicago
312 961 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 962 Landline Global Crossing Local Services, Inc. - Il Chicago
312 963 Wireless Usa Mobility Wireless, Inc. Chicago
312 964 Landline Onvoy, LLC Chicago
312 965 Wireless Cellco Partnership DBA Verizon Wireless - Il Chicago
312 966 Landline Metropcs, Inc. Chicago
312 967 Landline Bandwidth.com Clec, LLC - Il Chicago
312 968 Wireless Cellco Partnership DBA Verizon Wireless - Il La Grange
312 969 Wireless Cellco Partnership DBA Verizon Wireless - Il La Grange
312 970 Landline Illinois Bell Tel Co Chicago
312 971 Landline Bandwidth.com Clec, LLC - Il Chicago
312 972 Wireless New Cingular Wireless Pcs, LLC - Il Chicago
312 973 Landline Mcimetro Access Transmission Services LLC Chicago
312 974 Landline Illinois Bell Tel Co Chicago
312 975 Landline T-Mobile USA, Inc. Chicago
312 977 Landline Illinois Bell Tel Co Chicago
312 978 Landline T-Mobile USA, Inc. Chicago
312 979 Landline Illinois Bell Tel Co Chicago
312 980 Landline Teleport Communications America, LLC - Il Chicago
312 981 Landline Ovation Communications Of Illinois, Inc. Chicago
312 982 Landline Comcast Ip Phone, LLC Chicago
312 983 Landline Illinois Bell Tel Co Chicago
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312 985 Landline Ovation Communications Of Illinois, Inc. Chicago
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312 992 Landline Illinois Bell Tel Co Chicago
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312 998 Landline Centurylink Communications, LLC Chicago
312 999 Landline Xo Illinois, Inc. Chicago