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: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-420 A Everett MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
617-420 0 Everett MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
617-420 1 Everett MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
617-420 2 Everett MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
617-420 3 Everett MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
617-420 4 Everett MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128      
617-420 5 Everett MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
617-420 6 Everett MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
617-420 7 Everett MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
617-420 8 Everett MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128      
617-420 9 Everett MA CATNMAAKPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.