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Area Codes > 773 > Central Office Codes

Exchange Rate Center State Operating Company
773-612 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-613 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-614 CHICGOZN10 IL T-MOBILE USA, INC.
773-615 CHICGOZN10 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-616 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-617 CHICGOZN01 IL NEXTEL COMMUNICATIONS, INC.
773-618 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-619 CHICGOZN03 IL NEXTEL COMMUNICATIONS, INC.
773-620 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-621 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-622 CHICGOZN05 IL AMERITECH ILLINOIS
773-623 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-624 CHICGOZN07 IL AMERITECH ILLINOIS
773-625 CHICGOZN05 IL AMERITECH ILLINOIS
773-626 CHICGOZN05 IL AMERITECH ILLINOIS
773-627 CHICGOZN08 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-628 CHICGOZN03 IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
773-629 CHICGOZN10 IL T-MOBILE USA, INC.
773-631 CHICGOZN03 IL AMERITECH ILLINOIS
773-632 CHICGOZN03 IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
773-633 CHICGOZN07 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-634 CHICGOZN04 IL MCI WORLDCOM COMMUNICATIONS, INC. - IL
773-635 CHICGOZN06 IL GLOBAL CROSSING LOCAL SERVICES, INC.-IL
773-636 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-637 CHICGOZN05 IL AMERITECH ILLINOIS
773-638 CHICGOZN06 IL AMERITECH ILLINOIS
773-639 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-640 CHICGOZN06 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-641 CHICGOZN03 IL NEXTEL COMMUNICATIONS, INC.
773-642 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-643 CHICGOZN07 IL AMERITECH ILLINOIS
773-644 CHICGOZN01 IL AIR FREE PAGING
773-645 CHICGOZN04 IL AMERITECH ILLINOIS
773-646 CHICGOZN09 IL AMERITECH ILLINOIS
773-647 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-648 CHICGOZN06 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-649 CHICGOZN02 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-650 CHICGOZN06 IL AMERITECH ILLINOIS
773-651 CHICGOZN07 IL AMERITECH ILLINOIS
773-652 CHICGOZN01 IL ARCH WIRELESS HOLDINGS, INC.
773-653 CHICGOZN03 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-654 CHICGOZN02 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-655 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-656 CHICGOZN10 IL T-MOBILE USA, INC.
773-657 CHICGOZN03 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-658 CHICGOZN05 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-659 CHICGOZN01 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-660 CHICGOZN10 IL AMERITECH ILLINOIS
773-661 CHICGOZN04 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-662 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-663 CHICGOZN03 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-664 CHICGOZN05 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-665 CHICGOZN04 IL AMERITECH ILLINOIS
773-667 CHICGOZN07 IL AMERITECH ILLINOIS
773-668 CHICGOZN05 IL LEVEL 3 COMMUNICATIONS, LLC - IL
773-670 CHICGOZN03 IL ARCH WIRELESS HOLDINGS, INC.
773-671 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-672 CHICGOZN10 IL T-MOBILE USA, INC.
773-673 CHICGOZN05 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-674 CHICGOZN06 IL AMERITECH ILLINOIS
773-676 CHICGOZN05 IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
773-677 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-678 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-679 CHICGOZN10 IL T-MOBILE USA, INC.
773-680 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-681 CHICGOZN02 IL MCIMETRO, ATS, INC.
773-682 CHICGOZN03 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-683 CHICGOZN03 IL SPRINT SPECTRUM L.P.
773-684 CHICGOZN07 IL AMERITECH ILLINOIS
773-685 CHICGOZN03 IL AMERITECH ILLINOIS
773-686 CHICGOZN11 IL AMERITECH ILLINOIS
773-687 CHICGOZN04 IL TELEPORT COMMUNICATIONS GROUP - CHICAGO
773-688 CHICGOZN05 IL SIGECOM, LLC - IL
773-689 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-691 CHICGOZN08 IL T-MOBILE USA, INC.
773-692 CHICGOZN05 IL ARCH WIRELESS HOLDINGS, INC.
773-693 CHICGOZN03 IL AMERITECH ILLINOIS
773-694 CHICGOZN11 IL AMERITECH ILLINOIS
773-695 CHICGOZN03 IL AMERITECH ILLINOIS
773-696 CHICGOZN06 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-697 CHICGOZN04 IL OVATION COMMUNICATIONS OF ILLINOIS, INC.
773-698 CHICGOZN04 IL T-MOBILE USA, INC.
773-699 CHICGOZN03 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-700 IL
773-701 CHICGOZN10 IL T-MOBILE USA, INC.
773-702 CHICGOZN07 IL AMERITECH ILLINOIS
773-704 CHICGOZN03 IL T-MOBILE USA, INC.
773-705 CHICGOZN10 IL GLOBALCOM, INC.-IL
773-706 CHICGOZN03 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-710 CHICGOZN03 IL NEW CINGULAR WIRELESS PCS, LLC - IL
773-711 IL
773-713 CHICGOZN01 IL AMERICAN MESSAGING (AM), INC.
773-714 CHICGOZN03 IL AMERITECH ILLINOIS
773-715 CHICGOZN06 IL T-MOBILE USA, INC.
773-716 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-718 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-719 CHICGOZN01 IL UNITED STATES CELLULAR CORP. - ILLINOIS
773-720 CHICGOZN01 IL CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
773-721 CHICGOZN09 IL AMERITECH ILLINOIS
773-722 CHICGOZN06 IL AMERITECH ILLINOIS