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: 442 [Rate centres in NPA 442] [Dial plan for NPA 442]

NXX: 294

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-294 A Ridgecrest CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
442-294 0 Ridgecrest CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-09-10   
442-294 1 Ridgecrest CA   073H TELNYX LLC 730   2017-06-16   
442-294 2 Ridgecrest CA   5562 METROPCS, INC. 730   2018-11-04   
442-294 3 Ridgecrest CA   6529 T-MOBILE USA, INC. 730   2019-12-13   
442-294 4 Ridgecrest CA   857F MCC TELEPHONY OF THE WEST, LLC - CA 730   2018-02-09   
442-294 5 Ridgecrest CA   707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 730   2018-05-04   
442-294 6 Ridgecrest CA   6529 T-MOBILE USA, INC. 730   2019-08-02   
442-294 7 Ridgecrest CA   649C ONVOY, LLC - CA 730   2016-11-20   
442-294 8 Ridgecrest CA   6529 T-MOBILE USA, INC. 730   2016-10-30   
442-294 9 Ridgecrest CA   6529 T-MOBILE USA, INC. 730   2016-08-11   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.