Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Seguin, TX

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-235 A SNANTX91XMY  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 566      
830-235 0   939H COMMIO, LLC 566   2024-01-19   
830-235 1   939H COMMIO, LLC 566   2024-01-19   
830-235 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2025-01-11   
830-235 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2025-01-11   
830-235 4   197D VONAGE AMERICA LLC 566   2023-12-15   
830-235 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-02-03   
830-235 7   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 566   2022-07-24   
830-235 8   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 566   2022-07-24   
830-235 9   939H COMMIO, LLC 566   2024-01-19   
830-243 A SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2024-12-08   
830-243 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2013-11-23   
830-243 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2015-02-17   
830-243 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2014-08-17   
830-243 3   5562 METROPCS, INC. 566   2014-09-02   
830-243 4   6529 T-MOBILE USA, INC. 566   2018-03-16   
830-243 5   903C ONVOY, LLC - TX 566   2014-09-26   
830-243 6   903C ONVOY, LLC - TX 566   2014-09-26   
830-243 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2014-09-29   
830-243 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2015-06-04   
830-272 A SNANTXDIXIX  114J EXIANT COMMUNICATIONS LLC 566      
830-272 0   177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2020-05-31   
830-272 1   114J EXIANT COMMUNICATIONS LLC 566   2018-10-19   
830-272 3   624H ONVOY SPECTRUM, LLC 566   2021-06-24   
830-272 4   516J TON80 COMMUNICATIONS, LLC 566   2021-10-01   
830-272 5   903C ONVOY, LLC - TX 566   2021-03-19   
830-272 6   6529 T-MOBILE USA, INC. 566   2022-04-06   
830-272 7   903C ONVOY, LLC - TX 566   2021-03-19   
830-272 8   6529 T-MOBILE USA, INC. 566   2020-09-14   
830-272 9   6529 T-MOBILE USA, INC. 566   2022-04-06   
830-305 A SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-340 A SNANTX91X9Y  073H TELNYX LLC 566      
830-340 0   073H TELNYX LLC 566   2021-08-14   
830-340 1   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-06-10   
830-340 2   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-09-22   
830-340 3   624H ONVOY SPECTRUM, LLC 566   2021-12-10   
830-340 4   624H ONVOY SPECTRUM, LLC 566   2021-12-10   
830-340 5   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-09-22   
830-340 6   6529 T-MOBILE USA, INC. 566   2022-04-06   
830-340 7   6529 T-MOBILE USA, INC. 566   2022-04-06   
830-340 8   6529 T-MOBILE USA, INC. 566   2022-04-06   
830-340 9   6529 T-MOBILE USA, INC. 566   2022-04-06   
830-372 A SGINTXSGDS0  9533 SOUTHWESTERN BELL 566      
830-379 A SGINTXSGDS0  9533 SOUTHWESTERN BELL 566      
830-386 A SGINTXSGDS0  9533 SOUTHWESTERN BELL 566      
830-386 0   9533 SOUTHWESTERN BELL 566      
830-386 1   073H TELNYX LLC 566   2017-03-22   
830-386 2   9533 SOUTHWESTERN BELL 566      
830-386 3   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2005-04-03   
830-386 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2004-11-23   
830-386 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2013-03-09   
830-386 7   9533 SOUTHWESTERN BELL 566      
830-386 8   5562 METROPCS, INC. 566   2013-06-15   
830-386 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2009-01-29   
830-390 A SNANTXCA74Z  939H COMMIO, LLC 566      
830-390 0   939H COMMIO, LLC 566   2022-03-27   
830-390 1   903C ONVOY, LLC - TX 566   2023-08-12   
830-390 2   903C ONVOY, LLC - TX 566   2023-08-12   
830-390 3   903C ONVOY, LLC - TX 566   2023-08-12   
830-390 4   490J DISH WIRELESS, LLC 566   2022-10-10   
830-390 5   6529 T-MOBILE USA, INC. 566   2022-11-02   
830-390 6   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 566   2023-07-24   
830-390 8   939H COMMIO, LLC 566   2024-01-19   
830-390 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2023-09-03   
830-401 A SGINTXSGDS0  9533 SOUTHWESTERN BELL 566      
830-401 0   9533 SOUTHWESTERN BELL 566      
830-401 1   9533 SOUTHWESTERN BELL 566      
830-401 2   9533 SOUTHWESTERN BELL 566      
830-401 3   5562 METROPCS, INC. 566   2020-01-28   
830-401 4   9533 SOUTHWESTERN BELL 566      
830-401 5   9533 SOUTHWESTERN BELL 566      
830-401 6   9533 SOUTHWESTERN BELL 566      
830-401 7   9533 SOUTHWESTERN BELL 566      
830-401 8   9533 SOUTHWESTERN BELL 566      
830-401 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2009-04-10   
830-406 A SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-406 0   5562 METROPCS, INC. 566   2015-10-18   
830-406 1   6529 T-MOBILE USA, INC. 566   2015-10-18   
830-406 2   793K TWC IP ENABLED SERVICES, LLC 566   2016-01-20   
830-406 3   903C ONVOY, LLC - TX 566   2016-02-22   
830-406 4   903C ONVOY, LLC - TX 566   2016-02-22   
830-406 5   903C ONVOY, LLC - TX 566   2016-04-23   
830-406 6   903C ONVOY, LLC - TX 566   2016-02-11   
830-406 7   903C ONVOY, LLC - TX 566   2016-04-23   
830-406 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2015-10-17   
830-406 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2015-10-17   
830-433 A   793K TWC IP ENABLED SERVICES, LLC 566      
830-433 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2005-06-13   
830-433 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2006-02-20   
830-433 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2014-11-20   
830-433 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2014-11-20   
830-433 4   793K TWC IP ENABLED SERVICES, LLC 566   2004-03-12   
830-433 5   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2006-04-10   
830-433 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 566   2006-10-23   
830-433 7   004F BANDWIDTH.COM CLEC, LLC - TX 566   2009-02-21   
830-433 8   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2011-06-09   
830-433 9   793K TWC IP ENABLED SERVICES, LLC 566   2007-03-27   
830-475 A SNANTX39TMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566      
830-475 0   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-12-22   
830-475 1   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-12-22   

1 2 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.