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: 413 [Rate centres in NPA 413] [Dial plan for NPA 413]

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
413-251 A Hinsdale MA SPFDMAWOXIY  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 126      
413-251 0 Hinsdale MA SPFDMAWOXTY  990E BANDWIDTH.COM CLEC, LLC - MA 126      
413-251 1 Hinsdale MA SPFDMAWOXIY  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 126   2006-01-06   
413-251 2 Hinsdale MA SPFDMAWOXTY  990E BANDWIDTH.COM CLEC, LLC - MA 126      
413-251 3 Hinsdale MA SPFDMAWOXIY  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 126   2004-09-04   
413-251 4 Hinsdale MA SPFDMAWOXTY  990E BANDWIDTH.COM CLEC, LLC - MA 126      
413-251 5 Hinsdale MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126   2018-07-23   
413-251 6 Hinsdale MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126   2013-01-10   
413-251 7 Hinsdale MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126   2019-04-29   
413-251 8 Hinsdale MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126   2019-04-29   
413-251 9 Hinsdale MA SPFDMAWOXTY  990E BANDWIDTH.COM CLEC, LLC - MA 126      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.