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.

Cisco, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
254-367 A DLLSTX97XAX  0051 SHELCOMM 552      
254-442 A CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 0 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-442 1 CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 2 CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 3 CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 4 CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 5 CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 6   683G BCM ONE CLOUD COMMUNICATIONS, LLC 552      
254-442 7 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-442 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-442 9 DLLSTX97X1X  073H TELNYX LLC 552      
254-469 A   318C CEBRIDGE TELECOM TX , L.P. - TX 552   2024-04-08   
254-469 0   515J IP HORIZON LLC 552      
254-469 1   318C CEBRIDGE TELECOM TX , L.P. - TX 552      
254-735 A RCSNTXHVBMD  516C AT&T CORP. 552      
254-735 0 DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552      
254-735 1 DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552      
254-735 2 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-735 3 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-735 4 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-735 5 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
254-735 6 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-735 7 RCSNTXHVBMD  516C AT&T CORP. 552      
254-735 8 DLLSTXALDS4  903C ONVOY, LLC - TX 552      
254-735 9   515J IP HORIZON LLC 552      
254-852 A DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552      
254-852 0   515J IP HORIZON LLC 552      
254-852 1 DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552      
254-852 2 DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552      
254-852 3 DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552      
254-852 4 DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552      
254-852 5 DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552      
254-852 6 FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
254-852 7 DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552      
254-852 8 DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552      
254-852 9 DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.