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: 474

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-474 A Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 0 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 1 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 2 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 3 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 4 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 5 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 6 Dorchester MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2023-08-17   
617-474 7 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 8 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      
617-474 9 Dorchester MA DRCHMAADDS1  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.