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: 628 [Rate centres in NPA 628] [Dial plan for NPA 628]

NXX: 363

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-363 A San Francisco: Juniper DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
628-363 0 San Francisco: Juniper DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2018-04-27   
628-363 1 San Francisco: Juniper DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
628-363 2 San Francisco: Juniper DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
628-363 3 San Francisco: Juniper DA CA FRMTCAJYDS0  707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 722   2018-07-13   
628-363 4 San Francisco: Juniper DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-08-01   
628-363 5 San Francisco: Juniper DA CA SNJUCACL2MD  197D VONAGE AMERICA LLC 722   2020-05-28   
628-363 6 San Francisco: Juniper DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-10-16   
628-363 7 San Francisco: Juniper DA CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2019-06-01   
628-363 8 San Francisco: Juniper DA CA SNRTCAHFDS0  433E SONIC TELECOM, LLC - CA 722   2020-06-26   
628-363 9 San Francisco: Juniper DA CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2018-10-22   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.