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: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-284 A Somerville MA SOVLMACEDS0  9102 VERIZON NEW ENGLAND INC. 128      
617-284 0 Somerville MA   892D ONVOY, LLC - MA 128   2019-07-01   
617-284 1 Somerville MA   0334 METROPOLITAN TELECOMMUNICATIONS OF MASS DBA METTEL 128   2007-03-05   
617-284 2 Somerville MA   2899 BROADVIEW NETWORKS, INC. - MA 128   2004-01-12   
617-284 3 Somerville MA   316E YMAX COMMUNICATIONS CORP. - MA 128   2008-03-09   
617-284 4 Somerville MA   7421 AT&T LOCAL 128   2002-11-25   
617-284 5 Somerville MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2007-05-17   
617-284 6 Somerville MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-07-25   
617-284 7 Somerville MA   9102 VERIZON NEW ENGLAND INC. 128      
617-284 8 Somerville MA   9102 VERIZON NEW ENGLAND INC. 128      
617-284 9 Somerville MA   4084 PAETEC COMMUNICATIONS, INC.- MA 128   2002-07-15   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.