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
530-250 3 Susanville CA CHICCA017MD  724   2006-04-15   
530-250 4 Susanville CA CHICCA017MD  724   2006-09-01   
530-253 7 Janesville CA CHICCA017MD  724   2017-08-23   
530-255 1 Redding CA CHICCA017MD  724      
530-256 7 Westwood CA   724   2017-08-24   
530-269 8 Auburn: North DA CA WSCRCAHW3MD  726   2005-07-23   
530-281 7 Keddie CA   724   2017-08-23   
530-282 1 Oroville CA CHICCA017MD  724   2008-11-25   
530-284 5 Greenville CA CHICCA017MD  724   2017-08-23   
530-285 4 Camptonville CA WSCRCAHW3MD  726   2005-07-26   
530-287 4 Alleghany CA WSCRCAHW3MD  726   2005-07-23   
530-292 8 North San Juan CA WSCRCAHW3MD  726   2005-07-23   
530-293 8 Placerville: Kyburz DA CA WSCRCAHW3MD  726   2014-06-28   
530-294 7 Bieber CA   724   2017-08-24   
530-296 4 Placerville: Kyburz DA CA WSCRCAHW3MD  726   2005-07-10   
530-299 7 Adin CA CHICCA017MD  724   2017-08-24   
530-302 A Davis CA   726      
530-302 1 Davis CA   726      
530-302 4 Davis CA   726      
530-302 9 Davis CA   726      
530-303 A Placerville: West DA CA   726      
530-303 4 Placerville: West DA CA   726      
530-303 9 Placerville: West DA CA WSCRCAHW3MD  726      
530-314 2 South Tahoe CA WSCRCAHW3MD  726   2010-02-21   
530-314 7 South Tahoe CA WSCRCAHW3MD  726   2005-07-10   
530-316 0 Blairsden CA CHICCA017MD  724   2007-05-17   
530-322 5 Portola CA CHICCA017MD  724   2005-08-01   
530-324 3 Willow Creek CA CHICCA017MD  724      
530-324 4 Willow Creek CA CHICCA017MD  724      
530-331 8 Yreka CA CHICCA017MD  724   2005-07-26   
530-331 9 Yreka CA CHICCA017MD  724   2007-07-03   
530-334 5 Georgetown CA WSCRCAHW3MD  726   2005-07-26   
530-335 1 Burney CA CHICCA017MD  724   2017-08-17   
530-336 4 Fall River Mills CA CHICCA017MD  724   2017-08-23   
530-337 7 Montgomery Creek CA CHICCA017MD  724   2017-08-24   
530-338 3 Redding CA CHICCA017MD  724   2013-07-07   
530-348 0 Cottonwood CA CHICCA017MD  724      
530-349 4 Colfax: Colfax DA CA WSCRCAHW3MD  726   2005-07-26   
530-353 A Oroville CA CHICCA017MD  724      
530-353 4 Oroville CA CHICCA017MD  724   2011-09-30   
530-361 6 Willows CA CHICCA017MD  724   2005-08-01   
530-362 4 Nevada City CA WSCRCAHW3MD  726   2005-07-23   
530-364 3 Anderson CA CHICCA017MD  724      
530-366 3 Red Bluff CA CHICCA017MD  724   2008-02-27   
530-377 5 Cottonwood CA CHICCA017MD  724   2005-08-02   
530-379 4 Woodland CA WSCRCAHW3MD  726   2014-01-04   
530-380 0 Lewiston CA CHICCA017MD  724      
530-380 1 Lewiston CA CHICCA017MD  724      
530-384 8 Los Molinos CA CHICCA017MD  724   2014-05-18   
530-387 4 Shingle Springs CA WSCRCAHW3MD  726   2005-07-23   

<< 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: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.