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.

Nassau (Rensselaer), NY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
518-766 A NASSNYXARS0  0084 TACONIC TEL. CORP. 134      
518-931 A   793K TWC IP ENABLED SERVICES, LLC 134      
518-931 0   793K TWC IP ENABLED SERVICES, LLC 134   2010-10-30   
518-931 1 HLDLNY06DS0  271G INTEGRATED PATH COMMUNICATIONS, LLC - NY 134   2015-03-30   
518-931 4   793K TWC IP ENABLED SERVICES, LLC 134   2006-11-20   
518-931 6 ALBYNYSSDMD  7140 TC SYSTEMS, INC. - NY 134   2021-04-02   
518-931 9 ALBYNYSSXAZ  818H PEERING HUB, INC. - NY 134   2021-04-26   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.