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.
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Switch: GNWCCTGNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-422 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-552 A Byram CT 9104 VERIZON NEW YORK, INC. 132      
203-618 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-622 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-625 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-629 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-661 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-681 A Byram CT 9104 VERIZON NEW YORK, INC. 132      
203-769 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-861 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-862 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-863 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      
203-869 A Greenwich CT 9104 VERIZON NEW YORK, INC. 132      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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