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
508-629 A Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 0 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 1 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 2 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 4 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 5 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 6 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 7 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      
508-629 8 Vineyard Haven MA   4536 XO MASSACHUSETTS, INC. 128      

Last updated: Sun, 31 May 2020 11:59:01 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.