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
650-241 A Redwood City CA SNFCCASY5MD  722      
650-241 0 Redwood City CA   722   2005-07-18   
650-241 1 Redwood City CA   722   2005-07-18   
650-241 2 Redwood City CA   722   2011-05-28   
650-241 3 Redwood City CA   722   2005-07-18   
650-241 4 Redwood City CA   722      
650-242 A San Mateo CA SNFCCASY5MD  722      
650-242 0 San Mateo CA   722   2005-06-23   
650-242 3 San Mateo CA   722   2005-03-15   
650-242 4 San Mateo CA   722      
650-242 8 San Mateo CA   722   2005-03-22   
650-242 9 San Mateo CA   722   2005-03-22   
650-248 2 Palo Alto CA   722   2007-06-22   
650-249 4 Redwood City CA   722   2003-01-09   
650-249 6 Redwood City CA   722   2007-09-25   
650-251 4 Palo Alto CA   722   2008-02-01   
650-257 A Redwood City CA   722      
650-257 1 Redwood City CA   722      
650-257 5 Redwood City CA   722      
650-257 8 Redwood City CA   722      
650-257 9 Redwood City CA   722      
650-262 A Pescadero CA SNFCCASY5MD  722      
650-262 0 Pescadero CA   722   2005-01-30   
650-262 4 Pescadero CA   722      
650-262 5 Pescadero CA   722   2005-09-22   
650-262 9 Pescadero CA   722   2012-01-08   
650-263 8 Moss Beach CA   722   2012-12-02   
650-264 7 San Carlos-Belmont CA   722   2005-11-13   
650-265 0 Mountain View CA   722   2004-12-27   
650-265 1 Mountain View CA   722   2007-10-08   
650-265 2 Mountain View CA   722   2005-06-10   
650-265 4 Mountain View CA   722   2003-03-22   
650-265 6 Mountain View CA   722   2012-02-13   
650-265 7 Mountain View CA   722   2005-06-10   
650-267 A South San Francisco CA SNFCCASY5MD  722      
650-267 4 South San Francisco CA   722      
650-267 8 South San Francisco CA   722   2012-02-05   
650-270 2 South San Francisco CA   722   2005-03-15   
650-272 2 Palo Alto CA   722   2017-05-20   
650-273 4 South San Francisco CA   722   2005-12-08   
650-273 5 South San Francisco CA   722   2005-12-08   
650-273 9 South San Francisco CA   722   2012-10-07   
650-276 0 Half Moon Bay CA   722   2005-02-14   
650-276 3 Half Moon Bay CA   722   2005-09-05   
650-276 4 Half Moon Bay CA   722   2004-01-13   
650-276 5 Half Moon Bay CA   722   2005-09-05   
650-282 3 Mountain View CA   722   2011-04-13   
650-284 4 Half Moon Bay CA   722   2003-01-29   
650-285 4 Palo Alto CA   722   2013-12-24   
650-285 5 Palo Alto CA   722   2013-12-24   

<< 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: VoIP.ms

Like this site? We accept donations via PayPal.