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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
650-437 9 San Mateo CA SNFCCASY5MD  722   2014-05-02   
650-445 0 San Mateo CA SNFCCASY5MD  722   2013-12-28   
650-446 3 Woodside CA SNFCCASY5MD  722   2012-08-02   
650-450 4 Mountain View CA SNFCCASY5MD  722   2006-09-09   
650-450 9 Mountain View CA SNFCCASY5MD  722   2007-08-24   
650-452 6 South San Francisco CA SNFCCASY5MD  722   2005-03-18   
650-458 0 San Mateo CA SNFCCASY5MD  722   2011-08-29   
650-458 4 San Mateo CA SNFCCASY5MD  722   2010-11-20   
650-460 6 Palo Alto CA SNFCCASY5MD  722   2015-08-30   
650-461 3 Palo Alto CA SNFCCASY5MD  722   2006-07-15   
650-461 4 Palo Alto CA SNFCCASY5MD  722   2010-12-24   
650-461 8 Palo Alto CA SNFCCASY5MD  722   2005-07-18   
650-461 9 Palo Alto CA SNFCCASY5MD  722   2005-07-18   
650-466 7 San Francisco: Juniper DA CA SNFCCASY5MD  722   2007-10-29   
650-472 A Los Altos CA SNFCCASY5MD  722      
650-472 0 Los Altos CA SNFCCASY5MD  722      
650-472 1 Los Altos CA SNFCCASY5MD  722      
650-472 2 Los Altos CA SNFCCASY5MD  722      
650-472 3 Los Altos CA SNFCCASY5MD  722      
650-472 4 Los Altos CA SNFCCASY5MD  722      
650-472 6 Los Altos CA SNFCCASY5MD  722      
650-472 8 Los Altos CA SNFCCASY5MD  722      
650-472 9 Los Altos CA SNFCCASY5MD  722      
650-481 8 Redwood City CA SNFCCASY5MD  722   2009-07-03   
650-488 3 San Francisco: Juniper DA CA SNFCCASY5MD  722   2007-06-01   
650-488 4 San Francisco: Juniper DA CA SNFCCASY5MD  722   2003-01-09   
650-488 5 San Francisco: Juniper DA CA SNFCCASY5MD  722   2007-07-03   
650-488 6 San Francisco: Juniper DA CA SNFCCASY5MD  722   2007-09-25   
650-488 7 San Francisco: Juniper DA CA SNFCCASY5MD  722   2007-07-30   
650-488 8 San Francisco: Juniper DA CA SNFCCASY5MD  722   2007-09-20   
650-488 9 San Francisco: Juniper DA CA SNFCCASY5MD  722   2007-10-08   
650-489 A San Carlos-Belmont CA SNFCCASY5MD  722      
650-489 0 San Carlos-Belmont CA SNFCCASY5MD  722   2005-01-15   
650-489 4 San Carlos-Belmont CA SNFCCASY5MD  722      
650-489 7 San Carlos-Belmont CA SNFCCASY5MD  722   2011-12-11   
650-489 9 San Carlos-Belmont CA SNFCCASY5MD  722   2013-11-10   
650-490 3 Millbrae CA SNFCCASY5MD  722   2006-02-05   
650-490 4 Millbrae CA SNFCCASY5MD  722   2004-04-10   
650-491 A South San Francisco CA SNFCCASY5MD  722      
650-491 0 South San Francisco CA SNFCCASY5MD  722      
650-491 3 South San Francisco CA SNFCCASY5MD  722      
650-491 5 South San Francisco CA SNFCCASY5MD  722   2014-07-20   
650-491 7 South San Francisco CA SNFCCASY5MD  722   2014-07-20   
650-491 8 South San Francisco CA SNFCCASY5MD  722      
650-492 4 Los Altos CA SNFCCASY5MD  722   2004-01-13   
650-492 5 Los Altos CA SNFCCASY5MD  722   2006-09-06   
650-492 6 Los Altos CA SNFCCASY5MD  722   2010-09-11   
650-492 7 Los Altos CA SNFCCASY5MD  722   2011-03-15   
650-492 8 Los Altos CA SNFCCASY5MD  722   2007-09-04   
650-497 A Palo Alto 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 >>

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.