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]

NXX: 708

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-708 A Aptos CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
831-708 0 Aptos CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-07-29   
831-708 1 Aptos CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-14   
831-708 2 Aptos CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-05-01   
831-708 3 Aptos CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2006-01-08   
831-708 4 Aptos CA SNFCCA01XGX  516C AT&T CORP. 722   2008-08-22   
831-708 5 Aptos CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-11-07   
831-708 6 Aptos CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-14   
831-708 7 Aptos CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-02-22   
831-708 8 Aptos CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-01-15   
831-708 9 Aptos CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-09-18   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.