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: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

NXX: 342

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-342 A Ansonia-Derby CT   516J TON80 COMMUNICATIONS LLC 920   2022-03-11   
475-342 0 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT DBA T-MOBILE USA 920   2022-03-12   
475-342 1 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT DBA T-MOBILE USA 920   2022-03-12   
475-342 2 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT DBA T-MOBILE USA 920   2022-03-12   
475-342 3 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT DBA T-MOBILE USA 920   2022-03-12   
475-342 4 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT DBA T-MOBILE USA 920   2022-05-21   
475-342 5 Ansonia-Derby CT   516J TON80 COMMUNICATIONS LLC 920   2022-03-11   
475-342 6 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT DBA T-MOBILE USA 920   2022-05-21   
475-342 7 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT DBA T-MOBILE USA 920   2022-05-21   
475-342 8 Ansonia-Derby CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2022-05-20   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.