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: 840 [Rate centres in NPA 840] [Dial plan for NPA 840]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-246 5 Etiwanda CA ONTRCAXPXOY  624H ONVOY SPECTRUM, LLC 730   2025-01-30   
840-246 6 Etiwanda CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-30   
840-246 7 Etiwanda CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-30   
840-246 8 Etiwanda CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-01-05   
840-246 9 Etiwanda CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-01-05   
840-247 A Highland CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-12   
840-247 0 Highland CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-01-13   
840-247 1 Highland CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-28   
840-247 2 Highland CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-28   
840-247 3 Highland CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-28   
840-247 4 Highland CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-28   
840-247 5 Highland CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-02-18   
840-247 6 Highland CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-03-23   
840-247 7 Highland CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-11-26   
840-247 8 Highland CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-12   
840-247 9 Highland CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-12   
840-248 A Fontana CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-26   
840-248 0 Fontana CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-28   
840-248 1 Fontana CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-28   
840-248 2 Fontana CA LSANCAJW7MD  939H COMMIO, LLC 730   2024-01-28   
840-248 3 Fontana CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2024-02-04   
840-248 4 Fontana CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2024-02-04   
840-248 5 Fontana CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2024-02-04   
840-248 6 Fontana CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-26   
840-248 7 Fontana CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-26   
840-248 8 Fontana CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-26   
840-248 9 Fontana CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-01-26   
840-249 A Marshall CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-01-28   
840-249 0 Marshall CA ONTRCAXPXPY  649C ONVOY, LLC - CA 730   2024-02-22   
840-249 1 Marshall CA ONTRCAXPXPY  649C ONVOY, LLC - CA 730   2024-02-22   
840-249 2 Marshall CA ONTRCAXPXPY  649C ONVOY, LLC - CA 730   2024-02-22   
840-249 3 Marshall CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2024-06-04   
840-249 4 Marshall CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-12-08   
840-249 5 Marshall CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-10-14   
840-249 6 Marshall CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-04-14   
840-249 7 Marshall CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-09-09   
840-249 8 Marshall CA ONTRCAXPXPY  649C ONVOY, LLC - CA 730   2024-02-22   
840-249 9 Marshall CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-01-28   
840-250 A Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   
840-250 0 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 1 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 2 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 3 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 4 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-04-05   
840-250 5 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-04-05   
840-250 6 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-04-05   
840-250 7 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   
840-250 8 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   
840-250 9 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   
840-251 A Redlands CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-24   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.