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: 518

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-518 A Waldorf MD ARTNVAARXKY  732J NUSO, LLC 236      
240-518 0 Waldorf MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2023-07-24   
240-518 1 Waldorf MD ARTNVAARXKY  732J NUSO, LLC 236   2022-10-30   
240-518 2 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-12-15   
240-518 3 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-12-15   
240-518 4 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-06-17   
240-518 5 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-02-07   
240-518 6 Waldorf MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-02-21   
240-518 7 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-06-17   
240-518 8 Waldorf MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2012-11-10   
240-518 9 Waldorf MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.