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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Switch: SNANTXCA14Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
210-488 A San Antonio TX 4911 IONEX COMMUNICATIONS SOUTH, INC. - TX 566      
956-857 A Laredo TX 4911 IONEX COMMUNICATIONS SOUTH, INC. - TX 566      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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