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 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-350 A Tres Pinos CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736      
831-350 0 Tres Pinos CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2010-08-30   
831-350 1 Tres Pinos CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2010-09-27   
831-350 3 Tres Pinos CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2015-05-03   
831-350 4 Tres Pinos CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736   2006-07-02   
831-350 5 Tres Pinos CA SLNSCA01X9Y  649C ONVOY, LLC - CA 736   2021-07-30   
831-350 6 Tres Pinos CA SLNSCA01XXX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 736   2007-10-18   
831-353 A Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-01-21   
831-353 0 Watsonville CA   515J IP HORIZON LLC 722   2016-09-15   
831-353 1 Watsonville CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2016-09-27   
831-353 2 Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-10-14   
831-353 3 Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-10-14   
831-353 4 Watsonville CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2016-12-09   
831-353 5 Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-08-17   
831-353 6 Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-08-17   
831-353 7 Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-08-17   
831-353 8 Watsonville CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-08-17   
831-353 9 Watsonville CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-09-23   
831-356 A Salinas CA MTRYCAPM6MD  965H FRACTEL, LLC 736      
831-356 0 Salinas CA SLNSCA01XHY  318J COMCAST IP PHONE, LLC 736   2020-09-12   
831-356 1 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2021-02-05   
831-356 2 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2021-02-05   
831-356 3 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2020-07-22   
831-356 4 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2020-07-22   
831-356 5 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2020-06-05   
831-356 6 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736   2020-06-05   
831-356 7 Salinas CA MTRYCAPM6MD  965H FRACTEL, LLC 736   2020-01-28   
831-356 8 Salinas CA SLNSCABIXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 736   2020-07-27   
831-356 9 Salinas CA MTRYCAPM6MD  965H FRACTEL, LLC 736   2020-01-28   
831-359 A Santa Cruz CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
831-359 0 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-10-01   
831-359 1 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-10-01   
831-359 2 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-10-01   
831-359 3 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-10-01   
831-359 4 Santa Cruz CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
831-359 5 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-03-31   
831-359 6 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-03-31   
831-359 7 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-03-31   
831-359 8 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-03-31   
831-359 9 Santa Cruz CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2003-03-31   
831-366 A Boulder Creek CA SNJUCACL9MD  516J TON80 COMMUNICATIONS, LLC 722      
831-366 6 Boulder Creek CA SNJUCACL9MD  516J TON80 COMMUNICATIONS, LLC 722   2022-04-24   
831-372 A Monterey CA MTRYCA01DS0  9740 PACIFIC BELL 736      
831-373 A Monterey CA MTRYCA01DS0  9740 PACIFIC BELL 736      
831-375 A Monterey CA MTRYCA01DS0  9740 PACIFIC BELL 736      
831-382 A San Lucas CA SNLCCA11RS1  9740 PACIFIC BELL 736      
831-382 0 San Lucas CA SNLCCA11RS1  9740 PACIFIC BELL 736      
831-382 1 San Lucas CA SNLCCA11RS1  9740 PACIFIC BELL 736      
831-382 2 San Lucas CA SLNSCA01XGX  9262 UTILITY TELECOM GROUP, LLC - CA 736   2006-06-14   
831-382 3 San Lucas CA MTRYCA012MD  981E BANDWIDTH.COM CLEC, LLC - CA 736   2010-08-30   

<< 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 >>

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.