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: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 770

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-770 A Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558      
512-770 0 Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558   2015-01-09   
512-770 1 Austin TX AUSXTXZRPS1  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 558   2016-11-03   
512-770 2 Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558   2015-01-09   
512-770 3 Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558   2015-01-09   
512-770 4 Austin TX AUSTTXGRDS7  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2015-02-02   
512-770 5 Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558   2015-01-09   
512-770 6 Austin TX AUSTTXGR25Z  516C AT&T CORP. 558   2015-01-27   
512-770 7 Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558   2015-01-09   
512-770 8 Austin TX AUSTTXGRDS7  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2015-02-02   
512-770 9 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2015-04-06   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.