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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OCN: 8912 CABLE & WIRELESS (RT)

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
664-349 A Plymouth RT SWCHRTUNKNO  830      
664-410 A Plymouth RT SWCHRTUNKNO  830      
664-412 A Plymouth RT SWCHRTUNKNO  830      
664-413 A Plymouth RT SWCHRTUNKNO  830      
664-414 A Plymouth RT SWCHRTUNKNO  830      
664-415 A Plymouth RT SWCHRTUNKNO  830      
664-491 A Plymouth RT SWCHRTUNKNO  830      
664-492 A Plymouth RT SWCHRTUNKNO  830      
664-493 A Plymouth RT SWCHRTUNKNO  830      
664-494 A Plymouth RT SWCHRTUNKNO  830      
664-495 A Plymouth RT SWCHRTUNKNO  830      
664-496 A Plymouth RT SWCHRTUNKNO  830      
664-664 A Plymouth RT SWCHRTUNKNO  830      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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