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: 8826 LEVEL 3 COMMUNICATIONS, 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 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
707-910 2 Sebastopol CA SNFCCASY5MD  722   2022-11-13   
707-921 1 Santa Rosa CA SNFCCASY5MD  722   2009-08-10   
707-921 5 Santa Rosa CA SNFCCASY5MD  722   2011-03-15   
707-922 A Guerneville CA SNFCCASY5MD  722      
707-922 0 Guerneville CA SNFCCASY5MD  722      
707-922 1 Guerneville CA SNFCCASY5MD  722      
707-922 2 Guerneville CA SNFCCASY5MD  722      
707-922 5 Guerneville CA SNFCCASY5MD  722      
707-922 7 Guerneville CA SNFCCASY5MD  722      
707-922 9 Guerneville CA SNFCCASY5MD  722      
707-924 A Leggett CA SNFCCASY5MD  722      
707-924 8 Leggett CA SNFCCASY5MD  722      
707-924 9 Leggett CA SNFCCASY5MD  722      
707-925 4 Leggett CA SNFCCASY5MD  722   2005-07-31   
707-927 A Napa CA SNFCCASY5MD  722      
707-927 0 Napa CA SNFCCASY5MD  722   2005-01-06   
707-927 1 Napa CA SNFCCASY5MD  722   2005-01-06   
707-927 2 Napa CA SNFCCASY5MD  722   2005-04-28   
707-927 4 Napa CA SNFCCASY5MD  722      
707-929 A Cobb Mountain CA SNFCCASY5MD  722      
707-929 1 Cobb Mountain CA SNFCCASY5MD  722      
707-929 3 Cobb Mountain CA SNFCCASY5MD  722      
707-929 4 Cobb Mountain CA SNFCCASY5MD  722   2005-07-31   
707-929 9 Cobb Mountain CA SNFCCASY5MD  722      
707-930 A Annapolis CA SNFCCASY5MD  722      
707-930 2 Annapolis CA SNFCCASY5MD  722   2022-02-24   
707-931 0 Sonoma CA SNFCCASY5MD  722   2005-01-18   
707-931 3 Sonoma CA SNFCCASY5MD  722   2012-06-24   
707-931 4 Sonoma CA SNFCCASY5MD  722   2003-03-22   
707-946 4 Weott CA SNFCCASY5MD  722   2005-07-31   
707-949 A Weott CA SNFCCASY5MD  722      
707-962 4 Fort Bragg CA SNFCCASY5MD  722   2005-07-31   
707-981 A Petaluma: Main DA CA SNFCCASY5MD  722      
707-981 0 Petaluma: Main DA CA SNFCCASY5MD  722   2010-02-01   
707-981 4 Petaluma: Main DA CA SNFCCASY5MD  722   2005-07-25   
707-982 A Covelo CA SNFCCASY5MD  722      
707-982 9 Covelo CA SNFCCASY5MD  722      
707-983 2 Covelo CA SNFCCASY5MD  722   2015-04-28   
707-984 4 Laytonville CA SNFCCASY5MD  722   2005-07-31   
707-986 4 Whitethorn CA SNFCCASY5MD  722   2005-07-31   
707-987 6 Middletown CA SNFCCASY5MD  722   2005-03-21   
707-988 A Whitethorn CA SNFCCASY5MD  722      
707-988 7 Whitethorn CA SNFCCASY5MD  722      
707-988 8 Whitethorn CA SNFCCASY5MD  722      
707-988 9 Whitethorn CA SNFCCASY5MD  722      
707-993 A Lower Lake CA SNFCCASY5MD  722      
707-993 4 Lower Lake CA SNFCCASY5MD  722   2005-07-31   
707-998 5 Clearlake Oaks CA SNFCCASY5MD  722   2005-07-26   
707-999 2 Vacaville CA SNFCCASY5MD  722   2011-12-30   
714-200 1 Santa Ana CA LSANCA54DS7  730      

<< 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 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.