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.

Waldorf, MD

<< 1 2 3 4 5 6 7 8 9 10 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-346 0 BTVLMD12CMA  5562 METROPCS, INC. 236   2006-11-07   
240-346 1 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-346 2 BTVLMD12CMA  5562 METROPCS, INC. 236   2006-11-07   
240-346 3 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-346 4 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-346 5 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-346 6 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-346 7 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-346 8 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-346 9 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-368 A WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-368 0 SLSPMD913MD  939H COMMIO, LLC 236   2021-10-14   
240-368 1 SLSPMD913MD  939H COMMIO, LLC 236   2021-10-14   
240-368 2 SLSPMD913MD  939H COMMIO, LLC 236   2021-10-14   
240-368 3 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-05-21   
240-368 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-368 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-07-12   
240-368 6 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-368 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-368 8 SLSPMD913MD  939H COMMIO, LLC 236   2021-10-14   
240-368 9 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-412 A BTVLMD12CMA  5562 METROPCS, INC. 236      
240-412 0 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-01-22   
240-412 1 BTVLMD12CMA  5562 METROPCS, INC. 236   2004-08-04   
240-412 2 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-09-13   
240-412 3 BTVLMD12CMA  5562 METROPCS, INC. 236   2007-07-06   
240-412 4 BTVLMD12CMA  5562 METROPCS, INC. 236   2007-07-06   
240-412 5 BTVLMD12CMA  5562 METROPCS, INC. 236   2007-07-06   
240-412 6 BTVLMD12CMA  5562 METROPCS, INC. 236   2008-02-20   
240-412 7 BTVLMD12CMA  5562 METROPCS, INC. 236   2006-08-07   
240-412 8 BTVLMD12CMA  5562 METROPCS, INC. 236   2004-04-23   
240-412 9 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-416 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 0 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 2 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 6 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 7 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-416 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2011-06-27   
240-416 9 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-13   
240-419 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-419 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-12-27   
240-419 1 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-03-03   
240-419 2 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2008-04-30   
240-419 3 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2008-04-30   
240-419 4 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-06-05   
240-419 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2008-10-05   

<< 1 2 3 4 5 6 7 8 9 10 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.