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: 660

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-660 A Gresham OR GRHMORXBCG1  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-660 0 Gresham OR GRHMORXBCG1  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-660 1 Gresham OR GRHMORXBCG1  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-660 2 Gresham OR PTLJORIY1MD  5562 METROPCS, INC. 672      
503-660 3 Gresham OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672      
503-660 4 Gresham OR PTLDOR13DS4  157F PEERLESS NETWORK OF OREGON, LLC - OR 672      
503-660 5 Gresham OR PTLJORIY1MD  5562 METROPCS, INC. 672      
503-660 6 Gresham OR PTLJORIY1MD  5562 METROPCS, INC. 672      
503-660 7 Gresham OR PTLJORIY1MD  5562 METROPCS, INC. 672      
503-660 8 Gresham OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672      
503-660 9 Gresham OR PTLJORIY1MD  5562 METROPCS, INC. 672      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.