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: 774 [Rate centres in NPA 774] [Dial plan for NPA 774]

NXX: 538

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
774-538 A Provincetown MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
774-538 0 Provincetown MA   515J IP HORIZON LLC 128   2016-06-26   
774-538 1 Provincetown MA BSTPMALLOMD  073H TELNYX LLC 128   2017-05-04   
774-538 2 Provincetown MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-06-07   
774-538 3 Provincetown MA   829J PAETEC ITEL, LLC 128   2007-02-20   
774-538 5 Provincetown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2012-03-19   
774-538 6 Provincetown MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2012-05-25   
774-538 7 Provincetown MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2014-01-22   
774-538 8 Provincetown MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   
774-538 9 Provincetown MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.