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: 631 [Rate centres in NPA 631] [Dial plan for NPA 631]

NXX: 819

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-819 A Bay Shore NY WHPLNYGRX0X  425J CSC WIRELESS, LLC 132      
631-819 0 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 1 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 2 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 3 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 4 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 5 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 6 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 7 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 8 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   
631-819 9 Bay Shore NY   425J CSC WIRELESS, LLC 132   2019-11-07   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.