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.

Mount Vernon, OH

<< 1 2 3

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
740-830 A MTVROHDD0MD  601G HORIZON SERVICES, INC. - OH 923      
740-830 0   515J IP HORIZON LLC 923   2024-03-03   
740-830 1 MTVROHDD0MD  601G HORIZON SERVICES, INC. - OH 923   2013-02-21   
740-830 2 LIMAOHXAXPX  624H ONVOY SPECTRUM, LLC 923   2021-11-15   
740-830 3 LIMAOHXAXPX  624H ONVOY SPECTRUM, LLC 923   2021-11-15   
740-830 4 LIMAOHXAXPX  624H ONVOY SPECTRUM, LLC 923   2022-11-10   
740-830 5 LIMAOHXAXPX  624H ONVOY SPECTRUM, LLC 923   2022-11-10   
740-830 6 MNFDOHXAXSX  547D TIME WARNER CABLE INFORMATION SVCS (OHIO) - OH 923   2015-09-28   
740-830 7 LIMAOHXAXPX  624H ONVOY SPECTRUM, LLC 923   2022-11-10   
740-830 8 MNFDOHXAXDX  464C ONVOY, LLC - OH 923   2023-08-13   
740-830 9 MNFDOHXAXDX  464C ONVOY, LLC - OH 923   2023-08-13   

<< 1 2 3

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.