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: 210 [Rate centres in NPA 210] [Dial plan for NPA 210]

Region: TX

OCN: 073H TELNYX LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
210-352 9 San Antonio TX SNANTXCAHMD  566   2019-12-12   
210-750 1 San Antonio TX SNANTXDIX6X  566   2021-11-01   
210-761 8 San Antonio TX SNANTXCAHMD  566   2019-01-01   
210-898 8 San Antonio TX SNANTXDIX6X  566   2020-10-28   
210-898 9 San Antonio TX SNANTXDIX6X  566   2020-10-28   
210-944 4 San Antonio TX SNANTXCAHMD  566   2017-04-05   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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