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.

Poolesville, MD

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-220 A SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-220 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2021-03-04   
240-220 1 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2021-04-19   
240-220 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-12-23   
240-220 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-07-12   
240-220 4 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2022-01-02   
240-220 5 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2022-04-04   
240-220 6 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2021-12-25   
240-220 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-04-25   
240-220 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2022-02-21   
240-220 9 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-255 A WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-255 0 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2022-06-14   
240-255 1 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-11-15   
240-255 2 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2022-03-12   
240-255 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-255 4 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2022-03-12   
240-255 5   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-06-21   
240-255 6 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2021-03-24   
240-255 7 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-11-15   
240-255 8 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2020-10-26   
240-255 9 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236      
240-489 A WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-489 0 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-489 1 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-02-28   
240-489 2 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-03-05   
240-489 3 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2005-07-25   
240-489 4 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-489 5 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-489 6   145J TERRA NOVA TELECOM INC. 236   2024-07-16   
240-489 8 WASHDCCZDS1  4773 XO MARYLAND, LLC 236   2005-08-15   
240-489 9 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-771 A VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-771 0 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-04-18   
240-771 1 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-04-18   
240-771 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-07-01   
240-771 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-08-05   
240-771 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-08-05   
240-771 5 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2018-02-02   
240-771 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-07-01   
240-771 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-07-01   
240-771 8 WASHDC127MD  073H TELNYX LLC 236   2017-04-27   
240-771 9   515J IP HORIZON LLC 236   2016-05-31   
240-812 A WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-812 1 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2011-04-04   
240-812 2 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2007-01-13   
240-812 3 WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-812 4 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-812 5 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-05-21   
240-812 6 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-03-02   

1 2 >>

Last updated: Sun, 18 Aug 2024 23:40:19 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.