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: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

NXX: 617

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-617 A Hercules-Rodeo CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-617 0 Hercules-Rodeo CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-10-22   
510-617 1 Hercules-Rodeo CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-10-22   
510-617 2 Hercules-Rodeo CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2020-07-02   
510-617 3 Hercules-Rodeo CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2020-07-02   
510-617 4 Hercules-Rodeo CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2020-07-02   
510-617 5 Hercules-Rodeo CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-08-29   
510-617 6 Hercules-Rodeo CA SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-11-17   
510-617 7 Hercules-Rodeo CA SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-11-17   
510-617 8 Hercules-Rodeo CA SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-08-26   
510-617 9 Hercules-Rodeo CA SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-02-22   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.