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: 491

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-491 A Midland NY DRPKNYDPRP0  9104 VERIZON NEW YORK, INC. 132      
631-491 0 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 1 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 2 Midland NY   997E BANDWIDTH.COM CLEC, LLC - NY 132   2017-07-29   
631-491 3 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 4 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 5 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 6 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 7 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 8 Midland NY   9104 VERIZON NEW YORK, INC. 132      
631-491 9 Midland NY   9104 VERIZON NEW YORK, INC. 132      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.