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: 684

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-684 A Aptos CA APTSCA12DS0  9740 PACIFIC BELL 722      
831-684 0 Aptos CA APTSCA12DS0  9740 PACIFIC BELL 722      
831-684 1 Aptos CA APTSCA12DS0  9740 PACIFIC BELL 722      
831-684 2 Aptos CA APTSCA12DS0  9740 PACIFIC BELL 722      
831-684 3 Aptos CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-684 4 Aptos CA APTSCA12DS0  9740 PACIFIC BELL 722      
831-684 5 Aptos CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-684 6 Aptos CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
831-684 7 Aptos CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
831-684 8 Aptos CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-684 9 Aptos CA   145J TERRA NOVA TELECOM INC. 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.