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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
210-510 A San Antonio TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566      
210-510 0 San Antonio TX SNANTXDIRMD  903C ONVOY, LLC - TX 566   2012-04-13   
210-510 1 San Antonio TX SNANTXDIRMD  903C ONVOY, LLC - TX 566   2012-04-13   
210-510 2 San Antonio TX SNANTXEW0MD  829J PAETEC ITEL, LLC 566   2012-04-23   
210-510 3 San Antonio TX SNANTXEW0MD  829J PAETEC ITEL, LLC 566   2012-04-23   
210-510 4 San Antonio TX SNANTXEW0MD  829J PAETEC ITEL, LLC 566   2012-04-23   
210-510 5 San Antonio TX SNANTXEW0MD  829J PAETEC ITEL, LLC 566   2012-04-23   
210-510 6 San Antonio TX SNANTX91DS1  8434 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 566   2012-05-20   
210-510 7 San Antonio TX SNANTX91DS1  8434 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 566   2012-05-20   
210-510 8 San Antonio TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2012-06-15   
210-510 9 San Antonio TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2012-06-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.