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: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-540 5 Salinas CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736   2006-07-07   
831-540 6 Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2005-11-03   
831-540 7 Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736   2006-08-10   
831-540 8 Salinas CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736   2006-07-07   
831-540 9 Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736   2006-11-16   
831-566 A Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
831-572 A Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-572 0 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2017-12-09   
831-572 1 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2017-12-09   
831-572 2 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2017-12-09   
831-572 3 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2017-12-09   
831-572 4 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2017-12-09   
831-572 5 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2017-12-15   
831-572 6 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-572 7 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-572 8 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-572 9 Aptos CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-574 A Carmel CA SLNSCA01XQY  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 736      
831-574 0 Carmel CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-574 1 Carmel CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2015-07-25   
831-574 2 Carmel CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2017-04-26   
831-574 3 Carmel CA SLNSCA01X5Y  516C AT&T CORP. 736   2008-06-05   
831-574 4 Carmel CA SLNSCA01XQY  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 736   2013-02-01   
831-574 5 Carmel CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736   2011-12-31   
831-574 6 Carmel CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2007-11-05   
831-574 7 Carmel CA SLNSCA01X7Y  508J CENTURYLINK COMMUNICATIONS, LLC 736   2015-11-09   
831-574 8 Carmel CA SLNSCA01XHY  318J COMCAST IP PHONE, LLC 736   2015-08-01   
831-574 9 Carmel CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736   2016-07-05   
831-575 A Santa Cruz CA SNTCCA0102T  9740 PACIFIC BELL 722      
831-576 A Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-01-21   
831-576 0 Santa Cruz CA SNFCCAMKX1Y  996H AIRESPRING, INC. 722   2020-05-18   
831-576 1 Santa Cruz CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-576 2 Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2007-09-07   
831-576 3 Santa Cruz CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-576 4 Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-576 5 Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-576 6 Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-576 7 Santa Cruz CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2021-04-01   
831-576 8 Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-576 9 Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-578 A Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 0 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 1 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 2 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 3 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 4 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 5 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 6 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 7 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-578 8 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2005-04-16   
831-578 9 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2005-12-17   
831-580 A Gonzales CA   515J IP HORIZON LLC 736      
831-580 0 Gonzales CA   515J IP HORIZON LLC 736   2022-06-22   
831-580 1 Gonzales CA   515J IP HORIZON LLC 736      
831-580 2 Gonzales CA   515J IP HORIZON LLC 736      
831-580 3 Gonzales CA SLNSCA01X1Y  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 736   2019-10-12   
831-580 4 Gonzales CA   515J IP HORIZON LLC 736   2022-08-18   
831-580 5 Gonzales CA   515J IP HORIZON LLC 736   2022-08-18   
831-580 6 Gonzales CA   515J IP HORIZON LLC 736   2022-08-18   
831-580 7 Gonzales CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2005-04-24   
831-580 8 Gonzales CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2021-06-06   
831-580 9 Gonzales CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2021-06-06   
831-582 A Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-582 0 Monterey CA   145J TERRA NOVA TELECOM INC. 736   2023-06-24   
831-582 1 Monterey CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2015-09-03   
831-582 2 Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-582 3 Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-582 4 Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-582 5 Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-582 6 Monterey CA MTRYCAPMDS0  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 736   2017-07-07   
831-582 7 Monterey CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2014-04-11   
831-582 8 Monterey CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2017-07-03   
831-582 9 Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-583 A Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-583 0 Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-583 1 Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-583 2 Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-583 3 Monterey CA MTRYCAPM5MD  145J TERRA NOVA TELECOM INC. 736   2024-05-10   
831-583 4 Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-583 5 Monterey CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2017-07-28   
831-583 6 Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-583 7 Monterey CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2016-08-19   
831-583 8 Monterey CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2016-08-19   
831-583 9 Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-585 A Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-585 0 Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2006-05-31   
831-585 1 Salinas CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736   2005-04-11   
831-585 2 Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2006-10-08   
831-585 3 Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2006-10-08   
831-585 4 Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2007-08-05   
831-585 5 Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2008-05-23   
831-585 6 Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736   2007-04-05   
831-585 7 Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736   2006-11-17   
831-585 8 Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736   2006-08-27   
831-585 9 Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736   2006-06-15   
831-586 A San Juan CA   515J IP HORIZON LLC 736      
831-586 0 San Juan CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2010-08-30   
831-586 1 San Juan CA   515J IP HORIZON LLC 736      
831-586 2 San Juan CA   515J IP HORIZON LLC 736      
831-586 3 San Juan CA   515J IP HORIZON LLC 736   2022-10-20   

<< 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 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.