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: 430 [Rate centres in NPA 430] [Dial plan for NPA 430]

NXX: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-337 A Ector TX DLLSTX97TMD  939H COMMIO, LLC 552      
430-337 0 Ector TX DLLSTX97TMD  939H COMMIO, LLC 552      
430-337 1 Ector TX DLLSTX97TMD  939H COMMIO, LLC 552      
430-337 2 Ector TX DLLSTX97TMD  939H COMMIO, LLC 552      
430-337 3 Ector TX DLLSTX97TMD  939H COMMIO, LLC 552      
430-337 4 Ector TX DLLSTX97TMD  939H COMMIO, LLC 552      
430-337 5 Ector TX SHMNTXXARMD  624H ONVOY SPECTRUM, LLC 552      
430-337 7 Ector TX DLLSTX97X6X  145J TERRA NOVA TELECOM INC. 552      

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

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