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: 4129 O1 COMMUNICATIONS, INC. - 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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
530-430 6 Sierraville CA   724   2003-10-12   
530-431 6 Richvale CA   724   2003-10-12   
530-435 4 Gazelle CA   724   2003-10-12   
530-436 4 Grenada CA   724   2003-10-12   
530-451 2 Smartsville CA   726   2002-10-12   
530-453 5 Nicolaus CA   726   2003-10-29   
530-455 2 Live Oak CA   726   2003-10-08   
530-456 3 Gridley CA   726   2003-10-29   
530-459 7 Montague CA   724   2003-10-12   
530-475 5 Hornbrook CA   724   2002-10-12   
530-480 2 Blairsden CA   724   2003-10-13   
530-486 A Stonyford CA CHICCA01QMD  724      
530-486 1 Stonyford CA   724      
530-486 2 Stonyford CA   724      
530-501 A Williams CA SCRMCA01DS9  726      
530-501 1 Williams CA   726      
530-501 2 Williams CA   726      
530-501 4 Williams CA   726      
530-502 A Princeton CA SCRMCA01DS9  726      
530-502 0 Princeton CA   726      
530-502 1 Princeton CA   726      
530-502 2 Princeton CA   726      
530-502 4 Princeton CA   726      
530-503 A Placerville: South DA CA SCRMCA01DS9  726      
530-503 1 Placerville: South DA CA   726      
530-503 2 Placerville: South DA CA   726      
530-503 4 Placerville: South DA CA   726      
530-506 A Knights Landing CA SCRMCA01DS9  726      
530-506 1 Knights Landing CA   726      
530-506 2 Knights Landing CA   726      
530-507 A Esparto CA SCRMCA01DS9  726      
530-507 1 Esparto CA   726      
530-507 2 Esparto CA   726      
530-508 A Dunnigan CA SCRMCA01DS9  726      
530-508 1 Dunnigan CA   726      
530-508 2 Dunnigan CA   726      
530-512 A Colfax: Colfax DA CA SCRMCA01DS9  726      
530-512 1 Colfax: Colfax DA CA   726      
530-512 2 Colfax: Colfax DA CA   726      
530-512 4 Colfax: Colfax DA CA   726      
530-522 A Camptonville CA SCRMCA01DS9  726      
530-522 1 Camptonville CA   726      
530-522 2 Camptonville CA   726      
530-522 4 Camptonville CA   726      
530-523 1 Homewood CA   726   2002-10-12   
530-523 2 Homewood CA   726   2002-10-12   
530-531 A Biggs CA CHICCA01QMD  724      
530-531 1 Biggs CA   724      
530-531 2 Biggs CA   724      
530-535 A Alleghany CA SCRMCA01DS9  726      

<< 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 >>

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.