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NPA: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-405 A West Belle Fourche WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640      
307-407 A West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640      
307-408 A Lyman WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-409 A La Grange WY SCTSNEXUIMD  6010 NEW CINGULAR WIRELESS PCS, LLC 646      
307-410 A Powell WY CSPRWYMAXEX  6529 T-MOBILE USA, INC. 654      
307-412 A Cheyenne WY CHYNWYMAXSX  7421 AT&T - LOCAL 654      
307-413 A Jackson WY JCSNWYMA1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-414 A Cheyenne WY CHYNWYRFDS0  581H AIRUS, INC. - WY 654      
307-415 A Cheyenne WY CHYNWYJL8MD  732J NUSO, LLC 654      
307-416 A Pinedale WY BGPNWYXC7MD  450F ONVOY, LLC - WY 654      
307-417 A Rawlins WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-418 A Jackson WY JCSNWYMA1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-419 A Cody WY CSPRWYMAXEX  6529 T-MOBILE USA, INC. 654      
307-420 A Lingle WY SCTSNEXUMMD  450F ONVOY, LLC - WY 646      
307-421 A Cheyenne WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654      
307-422 A Chugwater WY CHGWWYXCDS1  2289 CHUGWATER TEL. CO. 654      
307-423 A Buffalo WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654      
307-424 A Lake WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650      
307-425 A Buffalo WY BFLOWYAO1MD  268A ADVANCED COMMUNICATIONS TECHNOLOGY, INC. - WY 654      
307-426 A Cheyenne WY   792K CHARTER IP ENABLED SERVICES, LLC 654      
307-427 A Mammoth WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650      
307-428 A Douglas WY CSPRWYMAXEX  6529 T-MOBILE USA, INC. 654   2024-02-03   
307-429 A Sheridan WY CHYNWYMAQMD  081F BANDWIDTH.COM CLEC, LLC - WY 654      
307-430 A Old Faithful WY BLNGMTAS9MD  450F ONVOY, LLC - WY 650   2024-02-12   
307-431 A Worland WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654      
307-432 A Cheyenne WY CHYNWYMADS0  9636 QWEST CORPORATION 654      
307-433 A Cheyenne WY CHYNWYMADS0  9636 QWEST CORPORATION 654      
307-434 A Gillette WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2024-04-08   
307-435 A Sheridan WY   6529 T-MOBILE USA, INC. 654   2026-01-30   
307-436 A Glenrock WY GLRKWYMARS1  9636 QWEST CORPORATION 654      
307-437 A Midwest WY MDWSWYXCRS1  3410 RT COMMUNICATIONS 654      
307-438 A Lander WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654      
307-439 A Casper WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-440 A Basin WY CSPRWYESPS1  009E BRESNAN BROADBAND OF WYOMING, LLC - WY [CHARTER] 654      
307-441 A Casper WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654      
307-442 A Evanston WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2024-05-04   
307-443 A Cheyenne WY CHYNWYRF2MD  939H COMMIO, LLC 654      
307-444 A Evanston WY EVTNWY161MD  3880 ALL WEST/WYOMING, INC. 654      
307-445 A Kemmerer WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654      
307-446 A West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640      
307-447 A Saratoga WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-448 A Rock Springs WY CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654      
307-449 A Rock Springs WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2024-05-18   
307-450 A Dubois WY CHYNWYVACM1  013B UNION TELEPHONE COMPANY 654      
307-451 A Rock Springs WY CHYNWYRF5MD  197D VONAGE AMERICA LLC 654   2024-06-27   
307-452 A Casper WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2024-07-21   
307-453 A Jackson WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2024-07-28   
307-454 A Riverton WY CHYNWYMAX2X  450F ONVOY, LLC - WY 654   2024-07-29   
307-455 A Dubois WY DUBSWYXCRS0  2291 DUBOIS TEL. EXCH., INC. 654      
307-456 A Big Piney WY BGPNWYXC7MD  450F ONVOY, LLC - WY 654      

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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