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: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-378 A Strongsville OH CLEVOH975MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-378 0 Strongsville OH CLEVOH975MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-378 1 Strongsville OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320   2004-08-27   
440-378 2 Strongsville OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320   2004-08-27   
440-378 3 Strongsville OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320   2004-08-27   
440-378 4 Strongsville OH CLEVOH975MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-378 5 Strongsville OH CLEVOH975MD  4863 LEVEL 3 COMMUNICATIONS, LLC - OH 320      
440-378 8 Strongsville OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320   2004-08-27   

Last updated: Sat, 01 Jun 2024 11:59:14 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.