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Area Codes > 773 > Central Office Codes

Exchange Rate Center State Operating Company
773-511 IL
773-512 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-513 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-514 CHICGOZN01 IL AMERICAN MESSAGING (AM), INC.
773-515 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-516 CHICGOZN02 IL NEUTRAL TANDEM-ILLINOIS, LLC - IL
773-517 CHICGOZN01 IL T-MOBILE USA, INC.
773-518 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-519 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-520 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-521 CHICGOZN06 IL AMERITECH ILLINOIS
773-522 CHICGOZN06 IL AMERITECH ILLINOIS
773-523 CHICGOZN06 IL AMERITECH ILLINOIS
773-524 CHICGOZN04 IL BROADWING COMMUNICATIONS, LLC - IL
773-525 CHICGOZN04 IL AMERITECH ILLINOIS
773-526 CHICGOZN08 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-527 CHICGOZN03 IL BROADWING COMMUNICATIONS, LLC - IL
773-528 CHICGOZN04 IL AMERITECH ILLINOIS
773-529 CHICGOZN04 IL AMERITECH ILLINOIS
773-530 CHICGOZN09 IL COMCAST PHONE OF ILLINOIS, LLC - IL
773-531 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-532 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-533 CHICGOZN06 IL AMERITECH ILLINOIS
773-534 CHICGOZN06 IL AMERITECH ILLINOIS
773-535 CHICGOZN06 IL AMERITECH ILLINOIS
773-536 CHICGOZN07 IL AMERITECH ILLINOIS
773-537 CHICGOZN04 IL CIMCO COMMUNICATIONS, INC. - IL
773-538 CHICGOZN07 IL AMERITECH ILLINOIS
773-539 CHICGOZN02 IL AMERITECH ILLINOIS
773-540 CHICGOZN03 IL T-MOBILE USA, INC.
773-541 CHICGOZN02 IL GLOBAL CROSSING LOCAL SERVICES, INC.-IL
773-542 CHICGOZN06 IL AMERITECH ILLINOIS
773-543 CHICGOZN04 IL T-MOBILE USA, INC.
773-544 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-545 CHICGOZN03 IL AMERITECH ILLINOIS
773-546 CHICGOZN10 IL AMERITECH ILLINOIS
773-547 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-548 CHICGOZN07 IL AMERITECH ILLINOIS
773-549 CHICGOZN04 IL AMERITECH ILLINOIS
773-550 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-551 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-552 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-553 CHICGOZN06 IL AMERITECH ILLINOIS
773-554 IL
773-555 CHICGOZN01 IL AMERITECH ILLINOIS
773-556 CHICGOZN03 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-557 CHICGOZN03 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-558 CHICGOZN03 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-559 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-560 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-561 CHICGOZN02 IL AMERITECH ILLINOIS
773-562 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-563 CHICGOZN10 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-564 CHICGOZN02 IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
773-565 CHICGOZN06 IL CIMCO COMMUNICATIONS, INC. - IL
773-566 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-567 CHICGOZN03 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-568 CHICGOZN10 IL AMERITECH ILLINOIS
773-569 CHICGOZN03 IL AMERITECH ILLINOIS
773-570 CHICGOZN11 IL LEVEL 3 COMMUNICATIONS, LLC - IL
773-571 CHICGOZN07 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-572 CHICGOZN04 IL BROADWING COMMUNICATIONS, LLC - IL
773-573 CHICGOZN07 IL XO ILLINOIS, INC.
773-574 CHICGOZN10 IL T-MOBILE USA, INC.
773-575 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-576 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-577 CHICGOZN03 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-578 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-579 CHICGOZN06 IL AMERITECH ILLINOIS
773-580 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-581 CHICGOZN08 IL AMERITECH ILLINOIS
773-582 CHICGOZN08 IL AMERITECH ILLINOIS
773-583 CHICGOZN02 IL AMERITECH ILLINOIS
773-584 CHICGOZN06 IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
773-585 CHICGOZN08 IL AMERITECH ILLINOIS
773-586 CHICGOZN08 IL AMERITECH ILLINOIS
773-587 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-588 CHICGOZN02 IL AMERITECH ILLINOIS
773-589 CHICGOZN05 IL AMERITECH ILLINOIS
773-590 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-591 CHICGOZN01 IL AMERITECH ILLINOIS
773-592 CHICGOZN03 IL T-MOBILE USA, INC.
773-593 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-594 CHICGOZN03 IL AMERITECH ILLINOIS
773-595 CHICGOZN07 IL T-MOBILE USA, INC.
773-596 CHICGOZN02 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-597 CHICGOZN07 IL CIMCO COMMUNICATIONS, INC. - IL
773-598 CHICGOZN04 IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
773-599 CHICGOZN08 IL T-MOBILE USA, INC.
773-600 CHICGOZN10 IL T-MOBILE USA, INC.
773-601 CHICGOZN11 IL AMERITECH ILLINOIS
773-602 CHICGOZN07 IL AMERITECH ILLINOIS
773-603 CHICGOZN10 IL T-MOBILE USA, INC.
773-604 CHICGOZN02 IL AMERITECH ILLINOIS
773-605 CHICGOZN02 IL GLOBALCOM, INC.-IL
773-606 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-607 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-608 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-610 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-611 IL