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: 747 [Rate centres in NPA 747] [Dial plan for NPA 747]

NXX: 287

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
747-287 A Reseda CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
747-287 0 Reseda CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2019-12-15   
747-287 1 Reseda CA   197D VONAGE AMERICA LLC 730   2020-06-22   
747-287 2 Reseda CA   649C ONVOY, LLC - CA 730   2020-06-07   
747-287 3 Reseda CA   649C ONVOY, LLC - CA 730   2020-06-07   
747-287 4 Reseda CA   6529 T-MOBILE USA, INC. 730   2019-08-30   
747-287 5 Reseda CA   6529 T-MOBILE USA, INC. 730   2019-08-30   
747-287 6 Reseda CA   6529 T-MOBILE USA, INC. 730   2019-07-12   
747-287 7 Reseda CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-07-05   
747-287 8 Reseda CA   6529 T-MOBILE USA, INC. 730   2019-06-01   
747-287 9 Reseda CA   6529 T-MOBILE USA, INC. 730   2019-03-31   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.