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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
650-681 0 Palo Alto CA   722   2010-06-25   
650-681 9 Palo Alto CA   722   2008-02-20   
650-683 A Woodside CA   722      
650-683 4 Woodside CA   722   2011-04-09   
650-684 5 Millbrae CA   722   2014-05-12   
650-694 8 Mountain View CA   722   2014-04-12   
650-720 4 Half Moon Bay CA   722   2012-03-05   
650-721 A Palo Alto CA SNFCCASY5MD  722      
650-723 A Palo Alto CA SNFCCASY5MD  722      
650-724 A Palo Alto CA SNFCCASY5MD  722      
650-725 A Palo Alto CA SNFCCASY5MD  722      
650-727 1 San Mateo CA   722   2014-08-05   
650-727 5 San Mateo CA   722   2014-08-25   
650-727 6 San Mateo CA   722   2014-08-25   
650-727 8 San Mateo CA   722   2014-08-25   
650-727 9 San Mateo CA   722   2014-08-05   
650-731 0 San Francisco: Juniper DA CA   722   2007-12-04   
650-735 0 Pacifica CA   722   2014-10-10   
650-736 A Palo Alto CA SNFCCASY5MD  722      
650-741 9 South San Francisco CA   722   2010-11-22   
650-763 A South San Francisco CA SNFCCASY5MD  722      
650-763 0 South San Francisco CA   722   2014-05-18   
650-763 2 South San Francisco CA   722   2009-12-31   
650-763 3 South San Francisco CA   722   2010-06-07   
650-763 8 South San Francisco CA   722   2008-12-08   
650-763 9 South San Francisco CA   722   2011-12-29   
650-779 4 Redwood City CA   722   2010-11-20   
650-779 5 Redwood City CA   722   2012-07-06   
650-817 7 Redwood City CA   722   2013-11-30   
650-825 6 South San Francisco CA   722   2012-08-14   
650-825 9 South San Francisco CA   722   2013-06-21   
650-826 3 South San Francisco CA   722   2013-02-20   
650-830 A San Carlos-Belmont CA SNFCCASYDS0  722      
650-830 0 San Carlos-Belmont CA   722      
650-830 3 San Carlos-Belmont CA   722   2014-08-25   
650-830 5 San Carlos-Belmont CA   722   2011-04-07   
650-830 7 San Carlos-Belmont CA   722   2014-04-06   
650-836 A Pescadero CA   722      
650-836 0 Pescadero CA   722   2016-08-01   
650-836 1 Pescadero CA   722   2016-08-01   
650-836 2 Pescadero CA   722   2016-08-01   
650-836 3 Pescadero CA   722   2016-08-01   
650-836 4 Pescadero CA   722   2016-08-01   
650-836 5 Pescadero CA   722   2016-08-01   
650-836 6 Pescadero CA   722   2016-08-01   
650-836 7 Pescadero CA   722   2016-08-01   
650-836 8 Pescadero CA   722   2016-08-01   
650-836 9 Pescadero CA   722   2016-08-01   
650-839 4 Redwood City CA   722   2012-07-06   
650-850 6 Woodside CA   722   2014-10-11   

<< 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 >>

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.