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: 937

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
413-937 A Lee MA SPFDMAXLDMD  3370 CTC COMMUNICATIONS CORP. - MA 126      
413-937 1 Lee MA SPFDMAXLDMD  3370 CTC COMMUNICATIONS CORP. - MA 126      
413-937 3 Lee MA SPFDMAWOXHX  506J TWILIO INTERNATIONAL, INC. 126   2020-12-27   
413-937 4 Lee MA SPFDMAWOXXY  7135 TC SYSTEMS, INC. 126   2018-03-09   
413-937 7 Lee MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126   2021-03-06   
413-937 8 Lee MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126   2021-03-06   
413-937 9 Lee MA   145J TERRA NOVA TELECOM INC. 126   2022-04-09   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.