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.

Mountain View, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
650-988 2   9740 PACIFIC BELL 722      
650-988 3   9740 PACIFIC BELL 722      
650-988 4   9740 PACIFIC BELL 722      
650-988 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2019-08-19   
650-988 6   9740 PACIFIC BELL 722      
650-988 7   9740 PACIFIC BELL 722      
650-988 8   9740 PACIFIC BELL 722      
650-988 9   9740 PACIFIC BELL 722      
650-996 A SNFDCACVCM7  6010 NEW CINGULAR WIRELESS PCS, LLC 722      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Last updated: Sun, 31 May 2020 11:59:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.