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
415-524 0 San Rafael CA   722   2012-11-18   
415-524 7 San Rafael CA   722   2008-05-20   
415-528 A San Francisco: Juniper DA CA SNFCCASY5MD  722      
415-528 2 San Francisco: Juniper DA CA   722   2013-02-05   
415-528 3 San Francisco: Juniper DA CA   722   2012-03-22   
415-528 5 San Francisco: Juniper DA CA   722   2013-02-12   
415-528 7 San Francisco: Juniper DA CA   722   2013-07-13   
415-530 A San Francisco: Central DA CA SNFCCASY5MD  722      
415-530 2 San Francisco: Central DA CA   722   2014-11-23   
415-530 3 San Francisco: Central DA CA   722   2014-11-23   
415-530 4 San Francisco: Central DA CA   722   2014-11-23   
415-534 6 Stinson Beach-Bolinas CA   722   2011-04-09   
415-539 0 San Francisco: Central DA CA   722   2012-11-20   
415-539 3 San Francisco: Central DA CA   722   2012-11-20   
415-548 2 Corte Madera CA   722   2011-05-28   
415-549 0 San Francisco: Central DA CA   722   2013-06-04   
415-578 A San Rafael CA SNFCCASY5MD  722      
415-578 3 San Rafael CA   722   2005-03-17   
415-578 4 San Rafael CA   722      
415-578 5 San Rafael CA   722   2005-03-17   
415-578 7 San Rafael CA   722   2010-06-03   
415-578 9 San Rafael CA   722   2009-11-02   
415-579 9 San Francisco: Central DA CA   722   2014-10-14   
415-580 3 San Francisco: Central DA CA   722   2012-07-06   
415-582 4 San Francisco: Juniper DA CA   722   2014-01-30   
415-592 5 San Francisco: Montrose-Evergreen DA CA   722   2011-05-28   
415-599 2 Novato CA   722   2005-01-10   
415-599 4 Novato CA   722   2002-10-29   
415-619 3 Belvedere CA   722   2015-11-12   
415-625 0 San Francisco: Central DA CA   722   2010-08-01   
415-625 9 San Francisco: Central DA CA   722   2010-06-17   
415-630 2 Nicasio CA   722   2005-02-02   
415-630 4 Nicasio CA   722   2003-03-22   
415-630 5 Nicasio CA   722   2011-04-09   
415-632 1 San Francisco: Central DA CA   722   2005-04-15   
415-635 0 San Francisco: Central DA CA   722   2013-04-07   
415-636 5 San Francisco: Central DA CA   722   2015-08-09   
415-639 9 Inverness CA   722   2011-10-06   
415-644 5 San Francisco: Central DA CA   722   2006-03-10   
415-646 2 San Francisco: Central DA CA   722   2015-08-09   
415-646 4 San Francisco: Central DA CA   722   2015-08-09   
415-649 A San Francisco: Montrose-Evergreen DA CA SNFCCASY5MD  722      
415-649 6 San Francisco: Montrose-Evergreen DA CA   722   2012-01-25   
415-651 4 San Francisco: Central DA CA   722   2004-04-18   
415-653 0 San Francisco: Central DA CA   722   2013-09-29   
415-653 1 San Francisco: Central DA CA   722   2013-09-29   
415-655 1 San Francisco: Central DA CA   722   2008-02-01   
415-658 6 San Francisco: Central DA CA   722   2006-12-15   
415-658 9 San Francisco: Central DA CA   722   2006-12-15   
415-659 8 San Francisco: Central DA CA   722   2006-03-10   

<< 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: Execulink Telecom

Like this site? We accept donations via PayPal.