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: 738 [Rate centres in NPA 738] [Dial plan for NPA 738]

Block: A

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
738-200 A Los Angeles: DA 10 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2025-12-21   
738-201 A Los Angeles: DA 07 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2025-12-26   
738-202 A Los Angeles: DA 04 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2026-02-06   
738-203 A Los Angeles: DA 13 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-02-01   
738-204 A Los Angeles: DA 08 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-08-17   
738-205 A Los Angeles: DA 10 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-08-17   
738-206 A Los Angeles: DA 11 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-08-17   
738-207 A Los Angeles: DA 14 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-08-17   
738-222 A Los Angeles: DA 06 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-02-17   
738-300 A Los Angeles: DA 06 CA LSANCAJWZMD  824J OPENTACT INC. 730   2026-07-26   
738-333 A Montebello CA LSANCARCD6S  252F WIDE VOICE, LLC - CA 730   2025-11-30   
738-444 A Los Angeles: DA 12 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-02-17   
738-529 A Los Angeles: DA 03 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-02-17   
738-666 A Montebello CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-02-17   
738-738 A Los Angeles: DA 06 CA LSANCAJWXMD  114J EXIANT COMMUNICATIONS LLC 730   2026-04-24   
738-777 A Los Angeles: DA 01 CA LSANCARCD6S  252F WIDE VOICE, LLC - CA 730   2025-11-17   
738-800 A Los Angeles: DA 04 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-02-17   
738-880 A Los Angeles: DA 01 CA SNJYCAHMDS1  193E 8X8, INC. 730   2026-07-13   
738-888 A Los Angeles: DA 06 CA ONTRCAXPXAY  252F WIDE VOICE, LLC - CA 730   2025-11-03   
738-900 A Los Angeles: DA 05 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-02-17   
738-998 A Los Angeles: DA 02 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2026-07-12   
738-999 A Los Angeles: DA 04 CA LSANCARCD6S  252F WIDE VOICE, LLC - CA 730   2025-11-21   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.