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: 7453 U.S. TELEPACIFIC CORP. - 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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
650-517 8 San Carlos-Belmont CA   722      
650-517 9 San Carlos-Belmont CA   722      
650-521 8 Palo Alto CA   722   2007-09-10   
650-522 3 San Mateo CA   722   2009-04-23   
650-532 1 San Mateo CA   722   2009-10-11   
650-535 A Moss Beach CA SNJSCAYBDS0  722      
650-535 9 Moss Beach CA   722      
650-538 A Pescadero CA SNJSCAYBDS0  722      
650-538 9 Pescadero CA   722      
650-543 A Palo Alto CA SNJSCAYBDS0  722      
650-546 3 Palo Alto CA   722   2015-11-26   
650-550 3 San Francisco: Juniper DA CA   722   2008-09-11   
650-618 7 Palo Alto CA   722   2008-03-08   
650-645 1 San Mateo CA   722   2007-03-11   
650-645 3 San Mateo CA   722   2007-03-11   
650-645 6 San Mateo CA   722   2007-03-11   
650-645 7 San Mateo CA   722   2007-03-11   
650-665 8 Palo Alto CA   722   2014-10-09   
650-681 3 Palo Alto CA   722   2010-03-08   
650-681 5 Palo Alto CA   722   2009-10-11   
650-681 6 Palo Alto CA   722   2009-10-11   
650-730 5 San Carlos-Belmont CA   722   2008-10-16   
650-737 4 South San Francisco CA   722   2008-11-16   
650-739 4 Palo Alto CA   722   2008-03-08   
650-746 3 San Francisco: Juniper DA CA   722   2002-10-17   
650-772 3 Mountain View CA   722   2015-01-17   
650-779 3 Redwood City CA   722   2015-04-01   
650-779 6 Redwood City CA   722   2015-04-01   
650-804 7 Palo Alto CA   722   2008-03-08   
650-810 A Mountain View CA SNJSCAYBDS0  722      
650-810 0 Mountain View CA   722      
650-810 1 Mountain View CA   722      
650-810 2 Mountain View CA   722      
650-810 8 Mountain View CA   722      
650-810 9 Mountain View CA   722      
650-832 6 San Carlos-Belmont CA   722      
650-931 A San Mateo CA SNJSCAYBDS0  722      
650-931 0 San Mateo CA   722      
650-931 1 San Mateo CA   722      
650-931 2 San Mateo CA   722      
650-931 3 San Mateo CA   722      
650-931 8 San Mateo CA   722      
650-931 9 San Mateo CA   722      
650-933 9 Mountain View CA   722   2012-03-06   
650-963 8 Mountain View CA   722   2007-12-27   
657-200 4 Westminster CA   730   2010-03-11   
657-212 8 Santa Ana CA   730   2012-01-25   
657-218 3 Santa Ana CA   730   2013-08-06   
657-218 7 Santa Ana CA   730   2013-09-19   
657-221 4 Orange CA   730   2013-05-23   

<< 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 >>

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.