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.

NPA: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-272 8 Oakland: Main-Piedmont DA CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2020-04-02   
510-272 9 Oakland: Main-Piedmont DA CA OKLDCA03DS4  9740 PACIFIC BELL 722      
510-273 A Oakland: Main-Piedmont DA CA OKLDCA03DS2  9740 PACIFIC BELL 722      
510-274 A Hayward CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
510-274 0 Hayward CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2006-09-30   
510-274 1 Hayward CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
510-274 2 Hayward CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-06-27   
510-274 3 Hayward CA OKLECAZVGT0  5562 METROPCS, INC. 722   2007-04-19   
510-274 4 Hayward CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2022-04-19   
510-274 5 Hayward CA SNFCCA01XGX  516C AT&T CORP. 722   2006-07-07   
510-274 6 Hayward CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-05-20   
510-274 7 Hayward CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2011-06-02   
510-274 8 Hayward CA OKLECAZVGT0  5562 METROPCS, INC. 722   2006-09-08   
510-274 9 Hayward CA OKLECAZVGT0  5562 METROPCS, INC. 722   2006-08-12   
510-275 A El Sobrante-Pinole CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-275 0 El Sobrante-Pinole CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-275 1 El Sobrante-Pinole CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-275 2 El Sobrante-Pinole CA SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2002-10-27   
510-275 3 El Sobrante-Pinole CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2001-07-24   
510-275 4 El Sobrante-Pinole CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-10-26   
510-275 5 El Sobrante-Pinole CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2005-03-22   
510-275 6 El Sobrante-Pinole CA SNFCCAMKX5Y  506J TWILIO INTERNATIONAL, INC. 722   2020-10-01   
510-275 7 El Sobrante-Pinole CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-10-10   
510-275 8 El Sobrante-Pinole CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2006-01-09   
510-275 9 El Sobrante-Pinole CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-09-14   
510-276 A Hayward CA SNLNCA11DS0  9740 PACIFIC BELL 722      
510-277 A Oakland: Berkeley DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-277 0 Oakland: Berkeley DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-277 1 Oakland: Berkeley DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-277 2 Oakland: Berkeley DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2005-06-02   
510-277 3 Oakland: Berkeley DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-277 4 Oakland: Berkeley DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2013-01-15   
510-277 5 Oakland: Berkeley DA CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2011-06-21   
510-277 6 Oakland: Berkeley DA CA OKLECAZVGT0  5562 METROPCS, INC. 722   2003-04-26   
510-277 7 Oakland: Berkeley DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2003-04-26   
510-277 8 Oakland: Berkeley DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-277 9 Oakland: Berkeley DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-278 A Hayward CA SNLNCA11DS0  9740 PACIFIC BELL 722      
510-279 A Fremont-Newark: Oliver DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-279 0 Fremont-Newark: Oliver DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-279 1 Fremont-Newark: Oliver DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-279 2 Fremont-Newark: Oliver DA CA SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-279 3 Fremont-Newark: Oliver DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-01-07   
510-279 4 Fremont-Newark: Oliver DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2003-03-04   
510-279 5 Fremont-Newark: Oliver DA CA SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-279 6 Fremont-Newark: Oliver DA CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2021-01-08   
510-279 7 Fremont-Newark: Oliver DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-279 8 Fremont-Newark: Oliver DA CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-06-23   
510-280 A Oakland: Berkeley DA CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-280 0 Oakland: Berkeley DA CA HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-05-21   

<< 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 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.