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: 524

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-524 A Laurel MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-524 0 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-08-01   
240-524 1 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2019-08-01   
240-524 2 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2020-04-14   
240-524 3 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2020-04-14   
240-524 4 Laurel MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-524 5 Laurel MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-524 6 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2020-04-14   
240-524 7 Laurel MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-524 8 Laurel MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2020-04-14   
240-524 9 Laurel MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.