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: 558

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
413-558 A Warren MA SPFDMAWONMD  624H ONVOY SPECTRUM, LLC 126      
413-558 0 Warren MA SPFDMAWOX0X  073H TELNYX LLC 126      
413-558 1 Warren MA SPFDMAWONMD  624H ONVOY SPECTRUM, LLC 126      
413-558 2 Warren MA SPFDMAPM4MD  318J COMCAST IP PHONE, LLC 126      
413-558 5 Warren MA SPFDMAWONMD  624H ONVOY SPECTRUM, LLC 126      
413-558 6 Warren MA SPFDMAWOXXY  7135 TC SYSTEMS, INC. 126      
413-558 7 Warren MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126      
413-558 8 Warren MA SPFDMAWOXLY  892D ONVOY, LLC - MA 126      

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.