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.

Westminster, CA

<< 1 2 3 4 5 6 7 8 9 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
657-376 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-06-11   
657-376 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-07-11   
657-376 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-07-08   
657-376 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-05-13   
657-376 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-05-06   
657-376 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-05-06   
657-376 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-05-06   
657-376 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-08-05   
657-376 9   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-05-05   
657-384 A ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
657-384 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-11-20   
657-384 1   649C ONVOY, LLC - CA 730   2019-09-09   
657-384 2   649C ONVOY, LLC - CA 730   2019-09-09   
657-384 3   6529 T-MOBILE USA, INC. 730   2019-07-13   
657-384 4   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-07-12   
657-384 5   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-07-12   
657-384 6   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-07-12   
657-384 7   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-07-12   
657-384 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-05-07   
657-384 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-05-07   
657-400 A LNBHCAXPXBY  649C ONVOY, LLC - CA 730   2024-01-23   
657-400 0   649C ONVOY, LLC - CA 730   2012-05-31   
657-400 1   829J PAETEC ITEL, LLC 730   2012-07-19   
657-400 2   981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-08   
657-400 3   981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-08   
657-400 4   649C ONVOY, LLC - CA 730   2012-05-31   
657-400 5   981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-08   
657-400 6   6529 T-MOBILE USA, INC. 730   2012-08-27   
657-400 7   508J CENTURYLINK COMMUNICATIONS, LLC 730   2013-03-15   
657-400 8   649C ONVOY, LLC - CA 730   2013-03-27   
657-400 9   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2013-08-22   
657-402 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
657-402 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-402 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-09-04   
657-407 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
657-407 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-407 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-12-14   
657-420 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
657-420 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-420 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-03-26   
657-425 A ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
657-425 0   649C ONVOY, LLC - CA 730   2020-07-06   
657-425 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-03-07   
657-425 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-03-07   
657-425 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-04-12   
657-425 4   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2020-04-27   
657-425 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-04-26   
657-425 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-05-03   
657-425 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-05-17   
657-425 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-05-07   
657-425 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-05-07   
657-431 A TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
657-431 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-08-19   
657-431 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-06-27   
657-431 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-06-27   
657-431 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-06-27   
657-431 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-06-27   
657-431 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-07-29   
657-431 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-07-29   
657-431 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-08-29   
657-431 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2019-08-29   
657-431 9   6529 T-MOBILE USA, INC. 730   2019-05-19   
657-435 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
657-435 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-435 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-06-04   
657-441 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
657-441 0   649C ONVOY, LLC - CA 730   2018-01-06   
657-441 1   649C ONVOY, LLC - CA 730   2018-01-06   

<< 1 2 3 4 5 6 7 8 9 >>

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.