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.

Switch: WLTWNYXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
315-964 A Williamstown NY 0096 CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 136      
315-964 0 Williamstown NY 0096 CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 136      
315-964 1 Williamstown NY 0096 CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 136      
315-964 2 Williamstown NY 0096 CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 136      
315-964 7 Williamstown NY 0096 CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 136      
315-964 9 Williamstown NY 0096 CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 136      

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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