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.

Damascus, MD

<< 1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-745 3 WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-745 4 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-08-16   
240-745 5 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
240-745 6 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-08-10   
240-745 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-06-27   
240-745 8   515J IP HORIZON LLC 236   2015-03-21   
240-745 9   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
240-782 A WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-782 0 WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-782 1 WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-782 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-24   
240-782 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-24   
240-782 4 WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 236      
240-782 5 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2021-04-09   
240-782 6 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-07-04   
240-782 7 WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-25   
240-782 8 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
240-782 9 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
240-957 A WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-957 0 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-10-27   
240-957 1 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2023-02-08   
240-957 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2023-06-17   
240-957 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-10-28   
240-957 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-10-28   
240-957 9 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2023-03-26   
301-253 A DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-368 A DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-368 0 WASHDC127MD  073H TELNYX LLC 236   2023-12-15   
301-368 1 DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-368 2 CHCHMDBE6MD  4716 PAETEC COMMUNICATIONS, INC. - MD 236   2007-08-03   
301-368 3 DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-368 4 BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2017-10-20   
301-368 5   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-368 6 WASHDC127MD  073H TELNYX LLC 236   2018-10-18   
301-368 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-29   
301-368 8 WASHDC127MD  073H TELNYX LLC 236   2017-04-27   
301-368 9 DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-391 A DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-391 0   515J IP HORIZON LLC 236   2016-05-31   
301-391 1   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-391 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-391 3   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-391 4   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-391 5   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-391 6 DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-391 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-391 8   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-391 9   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-22   
301-414 A DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      
301-414 0 DMSCMDDEDS0  9212 VERIZON MARYLAND, INC. 236      

<< 1 2 3 >>

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.