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: 440 [Rate centres in NPA 440] [Dial plan for NPA 440]

NXX: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-621 A Bainbridge (Geauga) OH CLEVOH64XIX  225H CEBRIDGE TELECOM OH, LLC DBA SUDDENLINK COMM 320   2024-05-09   
440-621 0 Bainbridge (Geauga) OH   464C ONVOY, LLC - OH 320   2025-05-02   
440-621 1 Bainbridge (Geauga) OH CLEVOH64XIX  225H CEBRIDGE TELECOM OH, LLC DBA SUDDENLINK COMM 320   2024-05-09   
440-621 8 Bainbridge (Geauga) OH   001F BANDWIDTH.COM CLEC, LLC - OH 320   2025-12-11   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.