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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
518-203 A Troy NY ALBYNYSSDS5  7140 TC SYSTEMS, INC. - NY 134      
518-203 0 Troy NY ALBYNYSSDS5  7140 TC SYSTEMS, INC. - NY 134      
518-203 1 Troy NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2004-12-30   
518-203 2 Troy NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2005-05-21   
518-203 3 Troy NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2003-08-20   
518-203 4 Troy NY LTHMNYNLW02  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 134   2011-10-21   
518-203 5 Troy NY ALBYNYVP2MD  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 134   2012-03-23   
518-203 6 Troy NY   793K TWC IP ENABLED SERVICES, LLC 134   2014-11-14   
518-203 7 Troy NY   793K TWC IP ENABLED SERVICES, LLC 134   2014-11-14   
518-203 8 Troy NY LTHMNYNLW02  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 134      
518-203 9 Troy NY ALBYNYSS5MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 134   2014-12-01   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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