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: 975

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-975 A Willoughby OH WLGHOH9495C  9321 OHIO BELL TEL CO 320      
440-975 0 Willoughby OH   9321 OHIO BELL TEL CO 320      
440-975 1 Willoughby OH   9321 OHIO BELL TEL CO 320      
440-975 2 Willoughby OH   9321 OHIO BELL TEL CO 320      
440-975 3 Willoughby OH   9321 OHIO BELL TEL CO 320      
440-975 4 Willoughby OH   9321 OHIO BELL TEL CO 320      
440-975 5 Willoughby OH   9321 OHIO BELL TEL CO 320      
440-975 6 Willoughby OH   6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 320   2009-08-27   
440-975 7 Willoughby OH   001F BANDWIDTH.COM CLEC, LLC - OH 320   2016-07-21   
440-975 8 Willoughby OH   9321 OHIO BELL TEL CO 320      
440-975 9 Willoughby OH   9321 OHIO BELL TEL CO 320      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.