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.

NPA: 330 [Rate centres in NPA 330] [Dial plan for NPA 330]

NXX: 997

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
330-997 A Berlin Center OH WRRNOHXA3MD  024E ARMSTRONG TELECOMMUNICATIONS, INC. - OH 322      
330-997 0 Berlin Center OH WRRNOHXA3MD  024E ARMSTRONG TELECOMMUNICATIONS, INC. - OH 322   2008-05-11   
330-997 1 Berlin Center OH WRRNOHXAVMD  464C ONVOY, LLC - OH 322   2023-09-15   
330-997 3 Berlin Center OH WRRNOHXAVMD  464C ONVOY, LLC - OH 322   2018-09-20   
330-997 7 Berlin Center OH YNTWOHHD0MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 322   2013-12-12   
330-997 8 Berlin Center OH WRRNOHXAVMD  464C ONVOY, LLC - OH 322   2021-03-08   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.