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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-528 A Leander TX AUSTTXLEDS0  9533 SOUTHWESTERN BELL 558      
512-528 0 Leander TX   9533 SOUTHWESTERN BELL 558      
512-528 1 Leander TX   9533 SOUTHWESTERN BELL 558      
512-528 2 Leander TX   9533 SOUTHWESTERN BELL 558      
512-528 3 Leander TX   903C ONVOY, LLC - TX 558   2013-02-20   
512-528 4 Leander TX   318C CEBRIDGE TELECOM TX , L.P. - TX 558   2014-02-28   
512-528 5 Leander TX   583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 558   2010-11-06   
512-528 6 Leander TX   145J TERRA NOVA TELECOM INC. 558   2021-01-26   
512-528 7 Leander TX   9533 SOUTHWESTERN BELL 558      
512-528 8 Leander TX   9533 SOUTHWESTERN BELL 558      
512-528 9 Leander TX   9533 SOUTHWESTERN BELL 558      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.