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: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 872

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-872 A San Pedro CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
310-872 0 San Pedro CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2003-08-11   
310-872 1 San Pedro CA   515J IP HORIZON LLC 730   2002-10-12   
310-872 2 San Pedro CA   515J IP HORIZON LLC 730   2002-10-12   
310-872 3 San Pedro CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2008-04-08   
310-872 4 San Pedro CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2002-12-09   
310-872 5 San Pedro CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2001-06-25   
310-872 6 San Pedro CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2002-12-08   
310-872 7 San Pedro CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2002-12-08   
310-872 8 San Pedro CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2002-12-08   
310-872 9 San Pedro CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2002-12-08   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.