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: 583

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-583 A Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-583 0 Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-583 3 Fire Island NY HCVLNYAHDS1  7126 CABLEVISION LIGHTPATH, INC. - NY 132   2003-09-02   
631-583 4 Fire Island NY   145J TERRA NOVA TELECOM INC. 132   2020-12-28   
631-583 5 Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-583 6 Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-583 7 Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-583 8 Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-583 9 Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.