Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 518 [Rate centres in NPA 518] [Dial plan for NPA 518]

NXX: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
518-638 A Argyle NY ARGYNYAYRS0  9104 VERIZON NEW YORK, INC. 134      
518-638 0 Argyle NY   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2008-04-29   
518-638 2 Argyle NY   829J PAETEC ITEL, LLC 134   2002-02-28   
518-638 3 Argyle NY   8249 RINGSQUARED TELECOM LLC 134   2006-10-02   
518-638 4 Argyle NY   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2004-07-16   
518-638 5 Argyle NY   193C SLIC NETWORK SOLUTIONS, INC. - NY 134   2020-09-24   
518-638 6 Argyle NY   9104 VERIZON NEW YORK, INC. 134      
518-638 7 Argyle NY   793K TWC IP ENABLED SERVICES, LLC 134   2007-04-18   
518-638 8 Argyle NY   9104 VERIZON NEW YORK, INC. 134      
518-638 9 Argyle NY   145J TERRA NOVA TELECOM INC. 134   2020-12-29   

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

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