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]

Block: A

<< 1 2 3 4 5 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-688 A Aptos CA APTSCA12DS0  9740 PACIFIC BELL 722      
831-689 A Aptos CA APTSCA12DS0  9740 PACIFIC BELL 722      
831-693 A Idria CA PNCLCAXFDS0  2346 PINNACLES TEL. CO. 736      
831-699 A Felton CA SNJUCACL7MD  965H FRACTEL, LLC 722      
831-703 A Boulder Creek CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
831-704 A Felton CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-01-21   
831-705 A Chualar CA SLNSCA01XQY  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 736      
831-706 A Santa Cruz CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
831-707 A Watsonville CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
831-708 A Aptos CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
831-709 A Ben Lomond CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
831-710 A Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-713 A Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
831-717 A Monterey CA SLNSCA01XKY  506J TWILIO INTERNATIONAL, INC. 736      
831-718 A Monterey CA SLNSCA01XTX  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 736      
831-722 A Watsonville CA WTVLCA01DS0  9740 PACIFIC BELL 722      
831-724 A Watsonville CA WTVLCA01DS0  9740 PACIFIC BELL 722      
831-726 A Watsonville CA ARMSCA11RS0  9740 PACIFIC BELL 722      
831-728 A Watsonville CA WTVLCA01DS0  9740 PACIFIC BELL 722      
831-731 A Castroville CA   515J IP HORIZON LLC 736      
831-732 A San Ardo CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-737 A Salinas CA SLNSCA01XQY  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 736      
831-740 A Watsonville CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
831-741 A Castroville CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-744 A Gonzales CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-747 A Monterey CA SLNSCA01X5Y  516C AT&T CORP. 736      
831-750 A Watsonville CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
831-751 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-753 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-754 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-755 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-756 A Salinas CA SLNSCA01XGX  9262 UTILITY TELECOM GROUP, LLC - CA 736      
831-757 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-758 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-759 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-760 A Monterey CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-761 A Watsonville CA WTVLCA01DS0  9740 PACIFIC BELL 722      
831-763 A Watsonville CA WTVLCA01DS0  9740 PACIFIC BELL 722      
831-766 A Salinas CA SLNSCA0102T  9740 PACIFIC BELL 736      
831-768 A Watsonville CA WTVLCA01DS0  9740 PACIFIC BELL 722      
831-769 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-770 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-771 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-772 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-774 A Gonzales CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-775 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-776 A Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-777 A Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-778 A San Lucas CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-783 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-784 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-785 A Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-786 A Watsonville CA WTVLCA01DS0  9740 PACIFIC BELL 722      
831-788 A Salinas CA MTRYCAPM6MD  965H FRACTEL, LLC 736      
831-789 A Salinas CA SLNSCA011KD  7379 MATRIX TELECOM, LLC. S/I/I TNCI - CA 736      
831-794 A Salinas CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-796 A Salinas CA SLNSCA01DS0  9740 PACIFIC BELL 736      
831-800 A Salinas CA SLNSCA01XPY  622J SKYE TELECOM LLC DBA SKYETEL 736      
831-801 A Hollister CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-808 A Soledad CA SLNSCA01XCY  624H ONVOY SPECTRUM, LLC 736   2024-02-09   
831-809 A Salinas CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-818 A Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
831-821 A Tres Pinos CA SLNSCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 736      
831-824 A Santa Cruz CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
831-830 A King City CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736      
831-833 A Hollister CA SLNTCAPS0MD  939H COMMIO, LLC 736      
831-837 A Salinas CA MTRYCAPM7MD  516J TON80 COMMUNICATIONS, LLC 736      
831-840 A Watsonville CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-842 A Aptos CA SNJUCACL7MD  965H FRACTEL, LLC 722      
831-844 A Big Sur CA MTRYCAPM7MD  516J TON80 COMMUNICATIONS, LLC 736      
831-850 A Felton CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-01-21   
831-851 A Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-01-21   
831-854 A Santa Cruz CA OKLDCAAN4KD  7379 MATRIX TELECOM, LLC. S/I/I TNCI - CA 722      
831-855 A Monterey CA MTRYCAPMDS0  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 736      
831-856 A Greenfield (Monterey) CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736      
831-859 A Salinas CA MTRYCAPM9MD  321J HD CARRIER LLC 736   2024-08-23   
831-867 A Monterey CA MTRYCAPM1MD  939H COMMIO, LLC 736      
831-869 A Monterey CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-877 A Carmel CA MTRYCAPM6MD  965H FRACTEL, LLC 736      
831-881 A Monterey CA   252F WIDE VOICE, LLC - CA 736   2025-12-26   
831-883 A Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-884 A Monterey CA MARNCA11DS0  9740 PACIFIC BELL 736      
831-886 A Monterey CA SLNTCAPS4MD  732J NUSO, LLC 736      
831-887 A Monterey CA MTRYCAPM5MD  145J TERRA NOVA TELECOM INC. 736      
831-888 A Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-889 A Santa Cruz CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-899 A Monterey CA SESDCA11DS0  9740 PACIFIC BELL 736      
831-900 A Santa Cruz CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-901 A Monterey CA   700J WAVENATION, LLC 736      
831-902 A Hollister CA SLNSCA01X8Y  5562 METROPCS, INC. 736      
831-905 A Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-915 A Monterey CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-917 A Monterey CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736      
831-920 A Monterey CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-921 A Tres Pinos CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-931 A King City CA SLNSCA01XCY  624H ONVOY SPECTRUM, LLC 736   2024-02-09   
831-946 A Santa Cruz CA SNJUCACL7MD  965H FRACTEL, LLC 722      
831-948 A Watsonville CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
831-970 A Salinas CA SLNSCA01X8Y  6529 T-MOBILE USA, INC. 736      
831-975 A Salinas CA SLNSCA01XHY  318J COMCAST IP PHONE, LLC 736      

<< 1 2 3 4 5 >>

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.