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: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

NXX: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-640 A Langham Creek TX   566J RADIANTIQ LLC 560   2021-03-06   
346-640 0 Langham Creek TX   515J IP HORIZON LLC 560   2021-03-21   
346-640 6 Langham Creek TX   566J RADIANTIQ LLC 560   2021-03-06   
346-640 9 Langham Creek TX   073H TELNYX LLC 560   2021-03-12   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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