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.

OCN: 9262 UTILITY TELECOM GROUP, LLC - CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
510-327 6 Hercules-Rodeo CA SNFCCAMKX1X  722   2009-03-20   
510-371 7 Fremont-Newark: Main DA CA SNFCCAMKX1X  722   2009-03-20   
510-374 5 Richmond CA SNFCCAMKX1X  722   2006-05-15   
510-425 1 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-425 3 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-425 4 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-425 5 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-425 6 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-425 7 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-425 8 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-425 9 Oakland: Trinidad DA CA SNFCCAMKX1X  722      
510-442 A Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-448 A Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-457 7 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2006-05-15   
510-474 7 Fremont-Newark: Greenleaf DA CA SNFCCAMKX1X  722   2006-05-15   
510-488 7 Oakland: Fruitvale DA CA SNFCCAMKX1X  722   2006-05-15   
510-492 3 Fremont-Newark: Oliver DA CA SNFCCAMKX1X  722   2006-05-15   
510-492 7 Fremont-Newark: Oliver DA CA SNFCCAMKX1X  722      
510-492 8 Fremont-Newark: Oliver DA CA SNFCCAMKX1X  722      
510-492 9 Fremont-Newark: Oliver DA CA SNFCCAMKX1X  722      
510-498 9 Fremont-Newark: Oliver DA CA SNFCCAMKX1X  722      
510-503 A Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-539 A Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-564 3 Oakland: Trinidad DA CA SNFCCAMKX1X  722   2006-05-15   
510-620 7 Richmond CA SNFCCAMKX1X  722      
510-647 7 Oakland: Berkeley DA CA SNFCCAMKX1X  722   2006-05-15   
510-659 3 Fremont-Newark: Oliver DA CA SNFCCAMKX1X  722      
510-661 7 Fremont-Newark: Oliver DA CA SNFCCAMKX1X  722      
510-764 7 Oakland: Alameda DA CA SNFCCAMKX1X  722   2006-05-15   
510-787 5 Crockett CA SNFCCAMKX1X  722   2008-06-06   
510-840 A Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-855 A Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-855 0 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2017-12-08   
510-855 1 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2017-12-08   
510-855 2 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2017-12-08   
510-855 3 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2017-12-08   
510-855 4 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2017-12-08   
510-855 5 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2017-12-08   
510-855 6 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722   2017-12-08   
510-855 7 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-855 8 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-855 9 Oakland: Main-Piedmont DA CA SNFCCAMKX1X  722      
510-884 A Hayward CA SNFCCAMKX1X  722      
510-889 4 Hayward CA SNFCCAMKX1X  722      
510-896 7 Fremont-Newark: Main DA CA SNFCCAMKX1X  722   2006-05-15   
510-964 8 El Sobrante-Pinole CA SNFCCAMKX1X  722   2009-03-20   
530-238 4 Shasta Lake CA RDNGCA025MD  724   2016-04-01   
530-262 A Redding CA RDNGCA025MD  724      
530-262 6 Redding CA RDNGCA025MD  724   2005-05-29   
530-269 7 Auburn: North DA CA SCRMCA01XQY  726   2005-04-26   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.