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: 315 [Rate centres in NPA 315] [Dial plan for NPA 315]

NXX: 523

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
315-523 A Watertown NY SALNNYBH2MD  6664 SPRINT SPECTRUM, L.P. 136      
315-523 0 Watertown NY SALNNYBH2MD  6664 SPRINT SPECTRUM, L.P. 136      
315-523 1 Watertown NY SALNNYBH2MD  6664 SPRINT SPECTRUM, L.P. 136      
315-523 2 Watertown NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY DBA T-MOBILE USA 136      
315-523 3 Watertown NY SYRCNYSUX8Y  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 136   2007-06-16   
315-523 4 Watertown NY SYRCNYSUX8Y  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 136   2007-06-16   
315-523 5 Watertown NY SYRCNYSUX8Y  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 136   2006-10-02   
315-523 6 Watertown NY SYRCNYSWX5Y  8473 LEVEL 3 TELECOM OF NEW YORK, LP - NY 136   2014-10-24   
315-523 7 Watertown NY SYRCNYSUXWY  997E BANDWIDTH.COM CLEC, LLC - NY 136   2014-03-22   
315-523 8 Watertown NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY DBA T-MOBILE USA 136   2010-10-20   
315-523 9 Watertown NY SALNNYBH2MD  6664 SPRINT SPECTRUM, L.P. 136   2012-03-10   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.