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: 562 [Rate centres in NPA 562] [Dial plan for NPA 562]

NXX: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
562-550 A Whittier CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
562-550 0 Whittier CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2021-05-06   
562-550 1 Whittier CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2021-05-06   
562-550 2 Whittier CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2021-05-06   
562-550 3 Whittier CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2021-05-06   
562-550 4 Whittier CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2021-05-06   
562-550 5 Whittier CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2022-09-16   
562-550 6 Whittier CA LSANCARC32Z  073H TELNYX LLC 730   2021-05-23   
562-550 7 Whittier CA COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2021-07-22   
562-550 8 Whittier CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-05-03   
562-550 9 Whittier CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-05-03   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.