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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
315-221 A Watertown NY SYRCNYSWDS0  7140 TC SYSTEMS, INC. - NY 136      
315-221 0 Watertown NY SYRCNYSUX8Y  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 136   2006-05-06   
315-221 1 Watertown NY SYRCNYSUX8Y  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 136   2006-05-06   
315-221 2 Watertown NY SYRCNYSWDS0  7140 TC SYSTEMS, INC. - NY 136      
315-221 3 Watertown NY SYRCNYSUXWY  997E BANDWIDTH.COM CLEC, LLC - NY 136   2010-08-09   
315-221 4 Watertown NY ESYRNYAWPS0  532D TIME WARNER CABLE INFO SVCE (NEW YORK) LLC-NY 136   2011-02-28   
315-221 5 Watertown NY SYRCNYSUXAY  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 136   2005-09-24   
315-221 6 Watertown NY SYRCNYSUDS2  7421 AT&T - LOCAL 136   2005-08-27   
315-221 7 Watertown NY SYRCNYSWDS0  7140 TC SYSTEMS, INC. - NY 136      
315-221 8 Watertown NY SYRCNYSUXVY  282E YMAX COMMUNICATIONS CORP. - NY 136   2010-12-03   
315-221 9 Watertown NY SYRCNYSUXWY  997E BANDWIDTH.COM CLEC, LLC - NY 136   2011-07-07   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.