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: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 827

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-827 A South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 0 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 1 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 2 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 3 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 4 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 5 South San Francisco CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-827 6 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 7 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 8 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      
650-827 9 South San Francisco CA SNBUCA02DS1  9740 PACIFIC BELL 722      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.