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.

Clear Spring, MD

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-301 A CMLDMDCMEMD  876D ONVOY, LLC - MD 240      
240-301 0 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-04-29   
240-301 1 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-08-08   
240-301 2 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-08-08   
240-301 3 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-10-17   
240-301 4 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-10-17   
240-301 5 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-03-04   
240-301 7 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-05-21   
240-301 8 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-04-29   
240-301 9 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2020-12-04   
240-647 A HGTWMD53DS0  2593 CORE COMMUNICATIONS, INC.- MD 240      
240-647 0   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-08-02   
240-647 1   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-08-02   
240-647 2   2593 CORE COMMUNICATIONS, INC.- MD 240   2018-08-02   
240-647 3 FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2019-06-21   
240-647 4 MTARMDSDGT0  2593 CORE COMMUNICATIONS, INC.- MD 240   2019-03-28   
240-647 5 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-01-05   
240-647 6 FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC.- MD 240   2019-07-31   
240-647 7 MTARMDSDGT0  2593 CORE COMMUNICATIONS, INC.- MD 240   2019-03-28   
240-647 8 FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC.- MD 240   2019-07-31   
240-647 9 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2020-01-05   
240-835 A FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240      
240-835 0 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-08-05   
240-835 1 CMLDMDCMUMD  073H TELNYX LLC 240   2021-08-05   
240-835 2 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-08-05   
240-835 3 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-08-05   
240-835 4 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2021-09-20   
240-835 5 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2021-11-29   
240-835 6 HGTWMD53EMD  516J TON80 COMMUNICATIONS, LLC 240   2021-10-15   
240-835 7 FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2022-01-20   
240-835 8 FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2021-08-04   
240-835 9 FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2022-01-20   
301-842 A CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 0 CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 1 CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 2 CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 3 CLSPMDCSRS0  9212 VERIZON MARYLAND, INC. 240      
301-842 4 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2008-12-04   
301-842 5 FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2009-12-31   
301-842 6 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-03-25   
301-842 7 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-01-02   
301-842 8 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-06-01   
301-842 9 HGTWMD530MD  073H TELNYX LLC 240   2017-08-08   
301-857 A HGTWMD53DS0  2593 CORE COMMUNICATIONS, INC.- MD 240      
301-857 0 FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC.- MD 240   2002-09-10   
301-857 1 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2012-10-06   
301-857 2 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2014-10-20   
301-857 3 HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2015-10-29   
301-857 4 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   
301-857 5 CMLDMDCMEMD  876D ONVOY, LLC - MD 240   2016-09-12   

1 2 >>

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.