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: 961

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-961 A Poolesville MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-961 0 Poolesville MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2022-11-06   
240-961 1 Poolesville MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2023-11-29   
240-961 2 Poolesville MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2023-12-08   
240-961 3 Poolesville MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2022-11-07   
240-961 4 Poolesville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-12-01   
240-961 5 Poolesville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-12-01   
240-961 6 Poolesville MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2023-12-08   
240-961 7 Poolesville MD ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2023-02-21   
240-961 8 Poolesville MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2023-05-25   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.