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: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]

NXX: 227

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
857-227 A Somerville MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-227 0 Somerville MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-227 1 Somerville MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
857-227 2 Somerville MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-227 3 Somerville MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
857-227 4 Somerville MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
857-227 5 Somerville MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
857-227 6 Somerville MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-227 7 Somerville MA SOVLMAAB5MD  732H BARR TELL USA, INC. - MA 128      
857-227 8 Somerville MA CMBRMABEQMD  321J HD CARRIER LLC 128      
857-227 9 Somerville MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      

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.