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.

Castile, NY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
585-493 A CSTLNYXARS0  0121 FRONTIER TELEPHONE OF ROCHESTER INC 974      
585-493 0   0121 FRONTIER TELEPHONE OF ROCHESTER INC 974      
585-493 1   997E BANDWIDTH.COM CLEC, LLC - NY 974   2011-10-10   
585-493 2   0121 FRONTIER TELEPHONE OF ROCHESTER INC 974      
585-493 3   0121 FRONTIER TELEPHONE OF ROCHESTER INC 974      
585-493 4   532D TIME WARNER CABLE INFO SVCE (NEW YORK) LLC-NY 974   2006-11-21   
585-493 5   0121 FRONTIER TELEPHONE OF ROCHESTER INC 974      
585-493 6   7133 MCI WORLDCOM COMMUNICATIONS INC. - NY 974   2013-05-31   
585-493 8   7575 CENTURYLINK COMMUNICATIONS LLC 974   2014-10-03   
585-493 9   0121 FRONTIER TELEPHONE OF ROCHESTER INC 974      
585-541 A   384C ONVOY, LLC NY 974      
585-541 0   384C ONVOY, LLC NY 974   2017-05-01   
585-541 2   384C ONVOY, LLC NY 974   2019-09-09   
585-541 3   384C ONVOY, LLC NY 974   2019-09-09   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.