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: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-657 A Bellingham MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-657 0 Bellingham MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2006-04-09   
508-657 1 Bellingham MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128      
508-657 2 Bellingham MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128   2005-10-01   
508-657 3 Bellingham MA CMBRMAORDS0  7199 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 128   2008-10-20   
508-657 4 Bellingham MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
508-657 5 Bellingham MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2025-04-19   
508-657 6 Bellingham MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-09-26   
508-657 7 Bellingham MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-09-19   
508-657 8 Bellingham MA   145J TERRA NOVA TELECOM INC. 128   2021-09-26   
508-657 9 Bellingham MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-08-01   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.