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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
227-220 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-01-07   
227-220 0 SLSPMD913MD  939H COMMIO, LLC 236   2024-01-08   
227-220 1 SLSPMD913MD  939H COMMIO, LLC 236   2024-01-08   
227-220 2 SLSPMD913MD  939H COMMIO, LLC 236   2024-01-08   
227-220 3 SLSPMD913MD  939H COMMIO, LLC 236   2024-01-08   
227-220 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-05-11   
227-220 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-01-08   
227-220 6 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-01-08   
227-220 7 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-01-08   
227-220 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-01-08   
227-220 9 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-01-07   
227-263 A WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2025-02-01   
227-263 0 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2025-02-01   
227-263 1   876D ONVOY, LLC - MD 236   2025-02-03   
227-263 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2025-02-13   
227-263 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-02-14   
227-263 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-02-14   
227-263 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-02-14   
227-263 8   732J NUSO, LLC 236   2025-02-03   
227-263 9   732J NUSO, LLC 236   2025-02-03   
227-722 A WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-06-26   
227-722 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-06-27   
227-722 1 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-06-27   
227-722 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-07-12   
227-722 3 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-11-01   
227-722 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-10-21   
227-722 5 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-12-06   
227-722 6 VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-07-12   
227-722 7 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-06-26   
227-722 8 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-06-26   
227-722 9 VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-09-15   
240-210 A BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 0 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 2 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 6 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 7 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-11-20   
240-210 8 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2007-07-27   
240-210 9 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-04-29   
240-213 A WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-213 0 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-01-03   
240-213 1 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-01-03   
240-213 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-01-03   
240-213 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-04-30   
240-213 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-04-30   
240-213 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-01-03   
240-213 6 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-10-17   
240-213 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-10-17   
240-213 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-01-03   
240-213 9 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-216 A BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 0 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 1 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 2 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 3 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 4 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 5 BTVLMD12CMA  5562 METROPCS, INC. 236   2010-11-10   
240-216 6 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 7 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 8 BTVLMD12CMA  5562 METROPCS, INC. 236      
240-216 9 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2010-12-14   
240-222 A HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-222 0 BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-09-02   
240-222 1 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-08-09   
240-222 2 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-06-02   
240-222 3 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-222 4 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-222 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-08-09   
240-222 6 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-222 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-222 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-11   
240-222 9 HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-229 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-229 0 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-229 1 BTVLMD12CMA  5562 METROPCS, INC. 236   2005-04-20   
240-229 2 BTVLMD12CMA  5562 METROPCS, INC. 236   2005-09-19   
240-229 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-10-17   
240-229 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-10-17   
240-229 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2010-08-28   
240-229 6 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-19   
240-229 7 BTVLMD12CMA  5562 METROPCS, INC. 236   2006-01-20   
240-229 8 BTVLMD12CMA  5562 METROPCS, INC. 236   2006-03-31   
240-229 9 VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-11-14   
240-270 A WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
240-270 0 VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-07-06   
240-270 1 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-03-31   
240-270 2 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-03-31   
240-270 3 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2012-01-10   
240-270 4 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2016-04-11   
240-270 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-10-07   
240-270 6 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2016-06-04   
240-270 7 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2015-03-20   
240-270 8 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2016-08-15   
240-270 9 CHCHMDBE1MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236   2015-08-17   
240-279 A CHCHMDBEPS0  2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-299 A BTVLMD12CMA  5562 METROPCS, INC. 236      
240-299 0 BTVLMD12CMA  5562 METROPCS, INC. 236      

1 2 3 4 5 >>

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.