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: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-503 A Tompkinsville MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-503 0 Tompkinsville MD   515J IP HORIZON LLC 236   2015-03-21   
240-503 1 Tompkinsville MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-06-07   
240-503 2 Tompkinsville MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-06-07   
240-503 3 Tompkinsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-06-27   
240-503 4 Tompkinsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
240-503 5 Tompkinsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
240-503 6 Tompkinsville MD WASHDC127MD  073H TELNYX LLC 236   2017-04-27   
240-503 7 Tompkinsville MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-12   
240-503 8 Tompkinsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-28   
240-503 9 Tompkinsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-28   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.