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: 336

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-336 A Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 0 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 1 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 2 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 3 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 4 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 5 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 6 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 7 Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-336 8 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
512-336 9 Austin TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.