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: 687

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-687 A Austin TX AUSWTXOO2MD  829J PAETEC ITEL, LLC 558   2025-01-23   
512-687 0 Austin TX   829J PAETEC ITEL, LLC 558      
512-687 1 Austin TX   829J PAETEC ITEL, LLC 558      
512-687 2 Austin TX   829J PAETEC ITEL, LLC 558      
512-687 3 Austin TX   7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558   2005-05-23   
512-687 4 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-11-04   
512-687 5 Austin TX   7249 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 558   2005-05-23   
512-687 6 Austin TX   829J PAETEC ITEL, LLC 558      
512-687 7 Austin TX   829J PAETEC ITEL, LLC 558      
512-687 8 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-11-04   
512-687 9 Austin TX   829J PAETEC ITEL, LLC 558      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.