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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-437 A Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 0 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 1 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 2 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 3 Barnstable MA   6101 COMCAST PHONE OF MASSACHUSETTS, INC. - MA 128   2018-11-29   
508-437 4 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 5 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 6 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 7 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 8 Barnstable MA   4536 XO MASSACHUSETTS, INC. 128      
508-437 9 Barnstable MA   966G LOCAL ACCESS LLC - MA 128   2019-04-26   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.