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.
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NPA: 254 [Rate centres in NPA 254] [Dial plan for NPA 254]

NXX: 442

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
254-442 A Cisco TX CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 0 Cisco TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2010-12-20   
254-442 1 Cisco TX CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 2 Cisco TX CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 3 Cisco TX CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 4 Cisco TX CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 5 Cisco TX CISCTXHIRS0  9533 SOUTHWESTERN BELL 552      
254-442 6 Cisco TX   683G BCM ONE CLOUD COMMUNICATIONS, LLC 552   2010-11-08   
254-442 7 Cisco TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2009-09-05   
254-442 8 Cisco TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2011-11-26   
254-442 9 Cisco TX DLLSTX97X1X  073H TELNYX LLC 552   2018-08-30   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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