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: 503 [Rate centres in NPA 503] [Dial plan for NPA 503]

NXX: 766

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-766 A Gresham OR PTLDOR62DS2  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672      
503-766 0 Gresham OR PTLDOR62DS2  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 672      
503-766 1 Gresham OR PTLDORWAXCY  647F ELTOPIA COMMUNICATIONS LLC - OR 672   2010-07-17   
503-766 2 Gresham OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2005-05-01   
503-766 3 Gresham OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2005-05-01   
503-766 4 Gresham OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2005-05-01   
503-766 5 Gresham OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2011-04-01   
503-766 6 Gresham OR PTLDOR69X9X  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 672   2008-12-15   
503-766 7 Gresham OR PTLJORIY1MD  5562 METROPCS, INC. 672   2017-07-03   
503-766 8 Gresham OR PTLDOR62GT2  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2015-09-16   
503-766 9 Gresham OR PTLDOR62GT2  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2015-09-16   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.