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: 598

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-598 A Birmingham OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320      
440-598 3 Birmingham OH CLEVOH64X0X  624H ONVOY SPECTRUM, LLC 320   2021-11-19   
440-598 4 Birmingham OH CLEVOH64X0X  624H ONVOY SPECTRUM, LLC 320   2021-11-19   
440-598 5 Birmingham OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320   2021-03-08   
440-598 6 Birmingham OH CLEVOH64X0X  624H ONVOY SPECTRUM, LLC 320   2021-06-06   
440-598 7 Birmingham OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320   2019-07-12   
440-598 8 Birmingham OH CLEVOHEKDS0  464C ONVOY, LLC - OH 320   2019-07-12   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.