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: 628 [Rate centres in NPA 628] [Dial plan for NPA 628]

NXX: 800

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-800 A San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-800 0 San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-800 1 San Francisco: Central DA CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
628-800 2 San Francisco: Central DA CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
628-800 3 San Francisco: Central DA CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
628-800 4 San Francisco: Central DA CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
628-800 5 San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-800 6 San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-800 7 San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-800 8 San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-800 9 San Francisco: Central DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.