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: 820 [Rate centres in NPA 820] [Dial plan for NPA 820]

NXX: 217

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-217 A Atascadero CA SNLOCA01XMY  490J DISH WIRELESS, LLC 740      
820-217 0 Atascadero CA SNLOCA01XMY  490J DISH WIRELESS, LLC 740      
820-217 1 Atascadero CA SNLOCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740      
820-217 2 Atascadero CA SNLOCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740      
820-217 3 Atascadero CA SNLOCA01XFX  649C ONVOY, LLC - CA 740      
820-217 4 Atascadero CA SNLOCA01XFX  649C ONVOY, LLC - CA 740      
820-217 5 Atascadero CA SNLOCA01XFX  649C ONVOY, LLC - CA 740      
820-217 6 Atascadero CA SNLOCA01XFX  649C ONVOY, LLC - CA 740      
820-217 7 Atascadero CA SNLOCA01XFX  649C ONVOY, LLC - CA 740      
820-217 8 Atascadero CA SNLOCA01XJX  6529 T-MOBILE USA, INC. 740      
820-217 9 Atascadero CA SNLOCA01XJX  6529 T-MOBILE USA, INC. 740      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.