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
707-517 1 Weott CA   722      
707-517 2 Weott CA   722      
707-518 A Willits CA SNFCCAMMDSA  722      
707-518 1 Willits CA   722      
707-518 2 Willits CA   722      
707-520 A Monte Rio CA SNFCCAMMDSA  722      
707-520 1 Monte Rio CA   722   2006-10-09   
707-520 2 Monte Rio CA   722   2006-10-09   
707-549 7 Clearlake Oaks CA   722   2003-10-12   
707-593 4 Mendocino CA   722   2003-10-13   
707-602 A Miranda CA SNFCCAMMDSA  722      
707-602 1 Miranda CA   722      
707-602 2 Miranda CA   722      
707-622 9 Timber Cove: Sea Ranch DA CA   722   2006-09-23   
707-634 5 Sebastopol CA   722   2003-10-13   
707-635 4 Dixon CA   726   2003-10-20   
707-657 2 Windsor CA   722   2003-10-13   
707-668 9 Blue Lake CA   722   2006-09-23   
707-670 9 Hopland CA   722   2006-10-12   
707-679 A Dixon CA SCRMCA01DS9  726      
707-679 1 Dixon CA   726   2003-10-12   
707-679 2 Dixon CA   726   2003-10-12   
707-706 1 Annapolis CA   722   2006-10-09   
707-706 2 Annapolis CA   722   2006-10-09   
707-722 6 Pepperwood CA   722   2006-09-23   
707-728 A Guerneville CA SNFCCAMMDSA  722      
707-728 1 Guerneville CA   722      
707-728 2 Guerneville CA   722      
707-733 7 Loleta CA   722   2006-09-23   
707-737 2 Calistoga CA   722   2003-10-12   
707-737 3 Calistoga CA   722   2003-10-12   
707-739 9 Nice CA   722   2006-10-12   
707-743 8 Potter Valley CA   722   2006-10-12   
707-772 1 Petaluma: Main DA CA   722   2003-10-13   
707-772 2 Petaluma: Main DA CA   722   2003-10-13   
707-786 1 Ferndale CA   722   2006-09-28   
707-786 2 Ferndale CA   722   2006-09-28   
707-796 1 Petaluma: Swift DA CA   722   2003-10-13   
707-796 2 Petaluma: Swift DA CA   722   2003-10-13   
707-797 A Bridgeville CA SNFCCAMMDSA  722      
707-797 1 Bridgeville CA   722      
707-797 2 Bridgeville CA   722      
707-809 A Middletown CA SNFCCAMMDSA  722      
707-809 1 Middletown CA   722   2006-10-09   
707-809 2 Middletown CA   722   2006-10-09   
707-833 9 Kenwood CA   722   2006-09-23   
707-847 9 Timber Cove: Timber Cove DA CA   722   2006-09-23   
707-857 8 Geyserville CA   722   2006-10-12   
707-876 8 Valley Ford CA   722   2006-10-12   
707-878 8 Tomales CA   722   2006-10-12   

<< 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: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.