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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-300 A New Haven CT   197D VONAGE NETWORK INC. 920      
475-300 0 New Haven CT   197D VONAGE NETWORK INC. 920   2016-08-01   
475-300 1 New Haven CT   5562 METRO PCS, INC. 920   2018-07-24   
475-300 2 New Haven CT   7621 COMCAST PHONE OF CONNECTICUT, INC. - CT 920   2018-06-29   
475-300 3 New Haven CT   5562 METRO PCS, INC. 920   2017-09-22   
475-300 4 New Haven CT   5562 METRO PCS, INC. 920   2018-04-09   
475-300 5 New Haven CT   5562 METRO PCS, INC. 920   2017-11-02   
475-300 6 New Haven CT   5562 METRO PCS, INC. 920   2018-04-10   
475-300 7 New Haven CT   5562 METRO PCS, INC. 920   2018-04-10   
475-300 8 New Haven CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2016-12-10   
475-300 9 New Haven CT   5562 METRO PCS, INC. 920   2018-07-24   

Last updated: Wed, 10 Apr 2019 01:22:05 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.