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Area Codes > 720 > Central Office Codes

Exchange Rate Center State Operating Company
720-542 DENVER CO QWEST CORPORATION
720-544 DENVER CO QWEST CORPORATION
720-548 DENVER CO GLOBAL CROSSING LOCAL SERVICES, INC.-CO
720-549 DENVERSLVN CO WINSTAR COMMUNICATIONS, LLC - CO
720-554 DENVER CO QWEST CORPORATION
720-555 DENVER CO QWEST CORPORATION
720-558 DENVER CO QWEST CORPORATION
720-559 DENVER CO TELEPORT COMMUNICATIONS GROUP - CO
720-560 DENVER CO BLUE LICENSES HOLDING, LLC
720-561 DENVER CO QWEST CORPORATION
720-562 DENVER CO QWEST CORPORATION
720-563 DENVER CO QWEST CORPORATION
720-564 DENVER CO QWEST CORPORATION
720-565 DENVER CO QWEST CORPORATION
720-566 DENVER CO QWEST CORPORATION
720-567 DENVER CO QWEST CORPORATION
720-568 DENVER CO QWEST CORPORATION
720-570 DENVER CO QWEST CORPORATION
720-578 DENVER CO QWEST CORPORATION
720-579 AURORA CO ALLEGIANCE TELECOM OF COLORADO, INC.
720-581 DENVER CO SPRINT SPECTRUM L.P.
720-587 DENVER CO AT&T LOCAL
720-596 DENVER CO TELEPORT COMMUNICATIONS GROUP - CO
720-611 CO
720-620 DENVER CO LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.
720-621 DENVER CO LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.
720-622 DENVER CO QWEST CORPORATION
720-624 DENVER CO TELEPORT COMMUNICATIONS GROUP - CO
720-628 DENVER CO LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.
720-629 DENVER CO LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.
720-635 DENVER CO BLUE LICENSES HOLDING, LLC
720-641 DENVER CO NEXTEL COMMUNICATIONS, INC.
720-652 LONGMONT CO QWEST CORPORATION
720-663 DENVER CO BANDWIDTH.COM CLEC, LLC - CO
720-670 AURORA CO CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO
720-684 LONGMONT CO ICG TELECOM GROUP - CO
720-685 BRIGHTON CO QWEST CORPORATION
720-690 DENVER CO LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.
720-700 CO
720-711 CO
720-720 CO
720-732 DENVER CO SPRINT SPECTRUM L.P.
720-733 DENVER CO QWEST CORPORATION
720-744 DENVERSLVN CO QWEST CORPORATION
720-746 DENVER CO QWEST CORPORATION
720-747 DENVERSLVN CO QWEST CORPORATION
720-748 DENVERSLVN CO QWEST CORPORATION
720-771 DENVER CO T-MOBILE USA, INC.
720-777 AURORA CO QWEST CORPORATION
720-785 DENVER CO TELEPORT COMMUNICATIONS GROUP - CO
720-810 AURORA CO CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO
720-811 CO
720-833 DENVER CO QWEST CORPORATION
720-834 DENVER CO TELEPORT COMMUNICATIONS GROUP - CO
720-836 DENVER CO ICG TELECOM GROUP - CO
720-837 DENVER CO SPRINT SPECTRUM L.P.
720-838 DENVER CO SPRINT SPECTRUM L.P.
720-839 DENVER CO SPRINT SPECTRUM L.P.
720-840 DENVER CO SPRINT SPECTRUM L.P.
720-841 DENVER CO SPRINT SPECTRUM L.P.
720-842 DENVER CO QWEST CORPORATION
720-847 AURORA CO QWEST CORPORATION
720-848 AURORA CO QWEST CORPORATION
720-849 DENVER CO SPRINT SPECTRUM L.P.
720-851 DENVER CO QWEST CORPORATION
720-852 DENVER CO QWEST CORPORATION
720-854 DENVER CO QWEST CORPORATION
720-855 DENVER CO QWEST CORPORATION
720-857 AURORA CO QWEST CORPORATION
720-858 AURORA CO QWEST CORPORATION
720-859 AURORA CO QWEST CORPORATION
720-862 AURORA CO XO COLORADO, LLC
720-863 DENVERSLVN CO XO COLORADO, LLC
720-864 LONGMONT CO QWEST CORPORATION
720-865 DENVER CO ICG TELECOM GROUP - CO
720-867 DENVER CO GREAT WEST SERVICES, LTD. - CO
720-870 DENVER CO QWEST CORPORATION
720-872 DENVER CO QWEST CORPORATION
720-873 DENVER CO QWEST CORPORATION
720-874 DENVER CO QWEST CORPORATION
720-875 DENVER CO QWEST CORPORATION
720-876 DENVER CO QWEST CORPORATION
720-877 DENVER CO ICG TELECOM GROUP - CO
720-878 DENVER CO ICG TELECOM GROUP - CO
720-879 DENVER CO ICG TELECOM GROUP - CO
720-880 DENVER CO ICG TELECOM GROUP - CO
720-881 DENVER CO ICG TELECOM GROUP - CO
720-882 DENVER CO ICG TELECOM GROUP - CO
720-883 DENVER CO ICG TELECOM GROUP - CO
720-884 DENVER CO QWEST CORPORATION
720-886 DENVER CO QWEST CORPORATION
720-887 DENVER CO QWEST CORPORATION
720-888 DENVER CO QWEST CORPORATION
720-889 DENVER CO ALLEGIANCE TELECOM OF COLORADO, INC.
720-890 DENVER CO QWEST CORPORATION
720-891 DENVER CO LEVEL 3 COMMUNICATIONS, LLC - CO
720-895 DENVER CO QWEST CORPORATION
720-897 DENVER CO GLOBAL CROSSING LOCAL SERVICES, INC.-CO
720-898 DENVER CO QWEST CORPORATION
720-903 DENVER CO GLOBAL CROSSING LOCAL SERVICES, INC.-CO