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
661-885 4 Bakersfield: South DA CA   734      
661-886 7 Lancaster CA   730   2006-03-03   
661-888 4 Santa Clarita: Newhall-Castaic DA CA   730   2011-08-29   
661-888 9 Santa Clarita: Newhall-Castaic DA CA   730   2019-12-26   
661-902 0 Lancaster CA   730   2007-07-03   
661-903 8 Arvin CA   734   2009-08-10   
661-949 5 Lancaster CA   730      
661-952 A Lancaster CA LSANCA54DS7  730      
661-952 0 Lancaster CA   730      
661-952 1 Lancaster CA   730      
661-952 2 Lancaster CA   730      
661-952 3 Lancaster CA   730      
661-952 5 Lancaster CA   730      
661-952 7 Lancaster CA   730   2008-05-21   
661-952 9 Lancaster CA   730      
661-977 A Santa Clarita: Saugus Canyon Country DA CA LSANCA54DS7  730      
661-977 0 Santa Clarita: Saugus Canyon Country DA CA   730      
661-977 3 Santa Clarita: Saugus Canyon Country DA CA   730      
661-977 4 Santa Clarita: Saugus Canyon Country DA CA   730      
661-977 9 Santa Clarita: Saugus Canyon Country DA CA   730      
669-200 6 San Jose: South DA CA   722   2013-02-25   
669-203 8 Campbell CA   722   2016-08-19   
669-216 1 San Jose: South DA CA   722   2019-05-05   
669-220 1 San Jose: West DA CA   722   2014-11-03   
669-220 2 San Jose: West DA CA   722   2014-11-03   
669-221 6 Los Gatos CA   722   2013-12-10   
669-222 6 Campbell CA   722   2013-03-10   
669-222 8 Campbell CA   722   2013-06-21   
669-226 6 San Jose: North DA CA   722   2014-03-25   
669-231 A San Jose: West DA CA SNFCCASY5MD  722      
669-231 0 San Jose: West DA CA   722   2014-03-23   
669-231 1 San Jose: West DA CA   722   2014-04-24   
669-231 2 San Jose: West DA CA   722   2014-01-23   
669-231 3 San Jose: West DA CA   722   2014-01-23   
669-231 5 San Jose: West DA CA   722   2014-01-24   
669-231 6 San Jose: West DA CA   722   2014-01-24   
669-232 6 Los Gatos CA   722   2014-12-14   
669-233 A Los Gatos CA SNFCCASY5MD  722      
669-233 2 Los Gatos CA   722   2015-01-02   
669-236 A San Jose: West DA CA SNFCCASY5MD  722      
669-236 2 San Jose: West DA CA   722   2014-07-19   
669-236 3 San Jose: West DA CA   722   2014-07-19   
669-236 4 San Jose: West DA CA   722   2014-07-19   
669-236 5 San Jose: West DA CA   722   2014-07-19   
669-236 6 San Jose: West DA CA   722   2014-07-19   
669-242 3 San Jose: West DA CA   722   2014-08-28   
669-242 4 San Jose: West DA CA   722   2014-08-28   
669-243 4 San Jose: West DA CA   722   2016-04-12   
669-251 2 Campbell CA   722   2015-03-14   
669-253 A Morgan Hill CA SNFCCASY5MD  722      

<< 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, 29 Jan 2026 14:35:03 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.