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: 384

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-384 A Lexington Park-Great Mills MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-384 0 Lexington Park-Great Mills MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2020-02-24   
240-384 1 Lexington Park-Great Mills MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-384 2 Lexington Park-Great Mills MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-11-16   
240-384 3 Lexington Park-Great Mills MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-11-16   
240-384 4 Lexington Park-Great Mills MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-03-04   
240-384 5 Lexington Park-Great Mills MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-03-04   
240-384 6 Lexington Park-Great Mills MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-03-04   
240-384 7 Lexington Park-Great Mills MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-384 8 Lexington Park-Great Mills MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-02-13   
240-384 9 Lexington Park-Great Mills MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.