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: 628 [Rate centres in NPA 628] [Dial plan for NPA 628]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-666 9 Ignacio CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-02-29   
628-667 A San Rafael CA SNJUCACL7MD  965H FRACTEL, LLC 722      
628-667 0 San Rafael CA SNJUCACL4MD  939H COMMIO, LLC 722   2021-10-14   
628-667 1 San Rafael CA SNJUCACL4MD  939H COMMIO, LLC 722   2021-10-14   
628-667 2 San Rafael CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-02-25   
628-667 3 San Rafael CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-11-18   
628-667 4 San Rafael CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-12-21   
628-667 5 San Rafael CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-05-25   
628-667 7 San Rafael CA SNFCCA21XPZ  553J WHITESKY COMMUNICATIONS, LLC 722   2021-09-16   
628-667 8 San Rafael CA SNJUCACL7MD  965H FRACTEL, LLC 722   2021-01-15   
628-667 9 San Rafael CA SNFCCAMKX6Y  515J IP HORIZON LLC 722   2021-05-01   
628-677 A Mill Valley CA SNJUCACL7MD  965H FRACTEL, LLC 722      
628-677 0 Mill Valley CA OKLECAZVGT0  5562 METROPCS, INC. 722   2022-05-06   
628-677 1 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-08-11   
628-677 2 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-08-11   
628-677 3 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 4 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 5 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 6 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-10-03   
628-677 7 Mill Valley CA SNJUCACL7MD  965H FRACTEL, LLC 722   2021-09-13   
628-677 8 Mill Valley CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-08-11   
628-677 9 Mill Valley CA SNJUCACL4MD  939H COMMIO, LLC 722   2022-11-10   
628-682 A Novato CA SNFCCAMKX5Y  506J TWILIO INTERNATIONAL, INC. 722      
628-682 0 Novato CA OKLDCAEB0MD  073H TELNYX LLC 722   2022-09-18   
628-682 1 Novato CA SNJUCACL4MD  939H COMMIO, LLC 722   2022-11-10   
628-682 2 Novato CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-12-05   
628-682 3 Novato CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2020-12-05   
628-682 4 Novato CA SNJUCACL9MD  516J TON80 COMMUNICATIONS, LLC 722   2021-06-19   
628-682 5 Novato CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-06-05   
628-682 6 Novato CA SNFCCAMKX5Y  506J TWILIO INTERNATIONAL, INC. 722   2020-10-26   
628-682 7 Novato CA   6529 T-MOBILE USA, INC. 722   2024-04-09   
628-682 8 Novato CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2023-03-11   
628-682 9 Novato CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2021-03-21   
628-688 A San Francisco: Central DA CA SNJUCACL7MD  965H FRACTEL, LLC 722      
628-688 0 San Francisco: Central DA CA SNRTCAHFDS0  433E SONIC TELECOM, LLC - CA 722   2020-12-19   
628-688 1 San Francisco: Central DA CA SNFCCAMKX5Y  506J TWILIO INTERNATIONAL, INC. 722   2020-10-01   
628-688 2 San Francisco: Central DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 3 San Francisco: Central DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 4 San Francisco: Central DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 5 San Francisco: Central DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-03-04   
628-688 6 San Francisco: Central DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-04-10   
628-688 7 San Francisco: Central DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-04-10   
628-688 8 San Francisco: Central DA CA SNJUCACL7MD  965H FRACTEL, LLC 722   2020-09-10   
628-688 9 San Francisco: Central DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-04-10   
628-699 A Sausalito CA SNJUCACL7MD  965H FRACTEL, LLC 722      
628-699 0 Sausalito CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-11-01   
628-699 1 Sausalito CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-11-01   
628-699 2 Sausalito CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-11-01   
628-699 3 Sausalito CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-11-01   
628-699 4 Sausalito CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-11-01   

<< 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 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.