Local Calling Guide

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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 1 Fire Island NY   145J TERRA NOVA TELECOM INC. 132   2025-04-09   
631-583 3 Fire Island NY   612K CSC VOICE, LLC 132   2003-09-02   
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: Sat, 21 Mar 2026 23:53:39 UTC

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