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: 740 [Rate centres in NPA 740] [Dial plan for NPA 740]

NXX: 823

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-823 A Logan OH CLMBOH1152Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 324      
740-823 0 Logan OH CLMBOH1152Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 324   2023-03-15   
740-823 1 Logan OH CLMBOH1152Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 324   2009-08-27   
740-823 2 Logan OH CLMBOH1152Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 324   2010-01-12   
740-823 3 Logan OH CLMBOH1152Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 324   2010-03-03   
740-823 4 Logan OH DLWROHXAYMD  7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 324   2014-07-15   
740-823 5 Logan OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2020-05-18   
740-823 6 Logan OH CLMFOHJU3MD  6701 AERIAL COMMUNICATIONS, INC. 324   2021-04-03   
740-823 7 Logan OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2020-05-18   
740-823 8 Logan OH CMBROHXBAMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324   2010-04-30   
740-823 9 Logan OH ATHNOHXAMMD  624H ONVOY SPECTRUM, LLC 324   2023-05-19   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.