(410) 203
Landline
Verizon Maryland, Inc.
-
(410) 313
Landline
Verizon Maryland, Inc.
-
(410) 418
Landline
Verizon Maryland, Inc.
-
Landline
Verizon Maryland, Inc.
-
(410) 442-0
Landline
Verizon Maryland, Inc.
-
(410) 442-1
Landline
Verizon Maryland, Inc.
-
(410) 442-2
Landline
Verizon Maryland, Inc.
-
(410) 442-3
Landline
Verizon Maryland, Inc.
-
(410) 442-4
Landline
Verizon Maryland, Inc.
-
(410) 442-5
Landline
Verizon Maryland, Inc.
-
(410) 442-6
Landline
Bandwidth.com CLEC, LLC - MD
2015/04/22
(410) 442-7
Landline
Verizon Maryland, Inc.
-
(410) 442-8
Landline
Verizon Maryland, Inc.
-
(410) 442-9
Landline
Verizon Maryland, Inc.
-
(410) 461
Landline
Verizon Maryland, Inc.
-
(410) 465
Landline
Verizon Maryland, Inc.
-
(410) 480
Landline
Verizon Maryland, Inc.
-
Landline
Verizon Maryland, Inc.
-
(410) 505-0
Landline
Peerless Network of Maryland, LLC
2015/09/21
(410) 505-1
Landline
Vdl, Inc. DBA Global Telecom Brokers - MD
2004/01/21
(410) 505-2
Landline
Verizon Maryland, Inc.
2003/01/09
(410) 505-3
Landline
Core Communications, Inc.- MD
2004/03/01
(410) 505-4
Landline
Level 3 Communications, LLC - AK
2003/01/27
(410) 505-5
Landline
Level 3 Communications, LLC - AK
2002/07/01
(410) 505-6
Landline
Verizon Maryland, Inc.
-
(410) 505-7
Landline
Peerless Network of Maryland, LLC
2020/01/27
(410) 505-8
Landline
Level 3 Communications, LLC - AK
2004/11/10
(410) 505-9
Landline
Atx Telecommunications Services, Ltd
2004/02/27
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 680-0
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 680-1
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 680-2
Landline
Onvoy, LLC - MD
2016/01/14
(410) 680-3
Landline
Onvoy, LLC - MD
2016/01/14
(410) 680-4
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 680-5
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 680-6
Landline
Ymax Communications Corp. - MD
2009/09/15
(410) 680-7
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 680-8
Landline
Comcast IP Phone, LLC
2012/10/30
(410) 680-9
Landline
Level 3 Telecom of Maryland, LLC - MD
-
Landline
Mcimetro Access Transmission Services LLC
-
(410) 696-0
Landline
Local Access LLC - MD
2016/05/03
(410) 696-1
Landline
Mcimetro Access Transmission Services LLC
-
(410) 696-2
Landline
Comcast IP Phone, LLC
2005/02/11
(410) 696-3
Landline
Mcimetro Access Transmission Services LLC
2005/06/06
(410) 696-4
Landline
Level 3 Communications, LLC - AK
2009/09/29
(410) 696-5
Landline
Level 3 Communications, LLC - AK
2008/02/01
(410) 696-6
Landline
Quantum Telecommunications, Inc. - MD
2016/01/04
(410) 696-7
Landline
Level 3 Communications, LLC - AK
2008/05/06
(410) 696-8
Landline
Ymax Communications Corp. - MD
2009/01/30
(410) 696-9
Landline
Mcimetro Access Transmission Services LLC
-
Landline
Verizon Maryland, Inc.
-
(410) 720-0
Landline
Verizon Maryland, Inc.
-
(410) 720-1
Landline
Verizon Maryland, Inc.
-
(410) 720-2
Landline
Comcast IP Phone, LLC
2007/07/18
(410) 720-3
Landline
Verizon Maryland, Inc.
-
(410) 720-4
Landline
Verizon Maryland, Inc.
-
(410) 720-5
Landline
Verizon Maryland, Inc.
-
(410) 720-6
Landline
Verizon Maryland, Inc.
-
(410) 720-7
Landline
Verizon Maryland, Inc.
-
(410) 720-8
Landline
Verizon Maryland, Inc.
-
(410) 720-9
Landline
Ymax Communications Corp. - MD
2007/07/24
(410) 748
Wireless
USA Mobility Wireless, Inc.
-
(410) 750
Landline
Verizon Maryland, Inc.
-
Landline
Verizon Maryland, Inc.
-
(410) 781-0
Landline
Verizon Maryland, Inc.
-
(410) 781-1
Landline
Onvoy, LLC - MD
2016/02/25
(410) 781-2
Landline
Baltimore-washington Telephone (Bwt)
2006/04/17
(410) 781-3
Landline
Core Communications, Inc.- MD
2018/05/23
(410) 781-4
Landline
Verizon Maryland, Inc.
-
(410) 781-5
Unknown
Barr Tell USA, Inc.
2016/11/18
(410) 781-6
Landline
Verizon Maryland, Inc.
-
(410) 781-7
Landline
Verizon Maryland, Inc.
-
(410) 781-8
Landline
Ymax Communications Corp. - MD
2008/04/01
(410) 781-9
Landline
Core Communications, Inc.- MD
2018/05/23
Landline
Verizon Maryland, Inc.
-
(410) 988-0
Landline
Ymax Communications Corp. - MD
2008/06/26
(410) 988-1
Landline
Ctc Communications Corp. - MD
2005/02/10
(410) 988-2
Landline
Level 3 Communications, LLC - AK
2005/08/15
(410) 988-3
Landline
Level 3 Communications, LLC - AK
2005/08/15
(410) 988-4
Landline
Level 3 Communications, LLC - AK
2005/08/15
(410) 988-5
Landline
Comcast IP Phone, LLC
2006/09/25
(410) 988-6
Landline
Bandwidth.com CLEC, LLC - MD
2010/08/04
(410) 988-7
Landline
Ymax Communications Corp. - MD
2008/06/26
(410) 988-8
Landline
Comcast IP Phone, LLC
2015/10/30
(410) 988-9
Landline
Verizon Maryland, Inc.
-
Landline
Verizon Maryland, Inc.
-
(410) 995-0
Landline
Verizon Maryland, Inc.
-
(410) 995-1
Landline
Verizon Maryland, Inc.
-
(410) 995-2
Landline
Verizon Maryland, Inc.
-
(410) 995-3
Landline
Verizon Maryland, Inc.
-
(410) 995-4
Landline
Core Communications, Inc.- MD
2019/04/12
(410) 995-5
Landline
Core Communications, Inc.- MD
2019/04/12
(410) 995-6
Landline
Verizon Maryland, Inc.
-
(410) 995-7
Landline
Bandwidth.com CLEC, LLC - MD
2016/08/09
(410) 995-8
Landline
Bandwidth.com CLEC, LLC - MD
2015/04/22
(410) 995-9
Landline
Onvoy, LLC - MD
2016/03/11
Landline
Xo Maryland, LLC
-
(443) 288-0
Landline
Xo Maryland, LLC
-
(443) 288-1
Landline
Xo Maryland, LLC
-
(443) 288-2
Landline
Xo Maryland, LLC
-
(443) 288-3
Landline
Ymax Communications Corp. - MD
2009/09/15
(443) 288-4
Landline
Xo Maryland, LLC
-
(443) 288-5
Landline
Xo Maryland, LLC
-
(443) 288-6
Landline
Xo Maryland, LLC
-
(443) 288-7
Landline
Xo Maryland, LLC
-
(443) 288-8
Landline
Xo Maryland, LLC
-
(443) 288-9
Landline
Xo Maryland, LLC
-
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 325-0
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 325-1
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 325-2
Wireless
T-mobile USA, Inc.
2013/05/21
(443) 325-3
Wireless
T-mobile USA, Inc.
2013/05/21
(443) 325-4
Wireless
T-mobile USA, Inc.
2015/01/08
(443) 325-5
Landline
Comcast IP Phone, LLC
2013/12/20
(443) 325-6
Wireless
T-mobile USA, Inc.
2016/01/11
(443) 325-7
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 325-8
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 325-9
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
Landline
Level 3 Communications, LLC - AK
-
(443) 355-0
Landline
Telnyx LLC
2017/03/02
(443) 355-1
Wireless
T-mobile USA, Inc.
2016/12/30
(443) 355-2
Landline
Core Communications, Inc.- MD
2018/05/23
(443) 355-3
Wireless
T-mobile USA, Inc.
2016/12/30
(443) 355-4
Landline
Level 3 Communications, LLC - AK
-
(443) 355-5
Wireless
T-mobile USA, Inc.
2017/03/01
(443) 355-6
Wireless
New Cingular Wireless PCS, LLC
2017/04/28
(443) 355-7
Wireless
New Cingular Wireless PCS, LLC
2017/04/28
(443) 355-8
Wireless
T-mobile USA, Inc.
2017/09/20
(443) 355-9
Wireless
New Cingular Wireless PCS, LLC
2017/09/21
Landline
Teleport Communications America - ID - LLC
-
(443) 364-0
Wireless
New Cingular Wireless PCS, LLC
2018/07/30
(443) 364-1
Wireless
T-mobile USA, Inc.
2018/04/05
(443) 364-2
Landline
Level 3 Communications, LLC - AK
2007/05/11
(443) 364-3
Landline
Onvoy, LLC - MD
2012/02/06
(443) 364-4
Landline
Ymax Communications Corp. - MD
2008/06/26
(443) 364-5
Landline
Teleport Communications America - ID - LLC
-
(443) 364-6
Landline
Ymax Communications Corp. - MD
2009/01/30
(443) 364-7
Landline
Ymax Communications Corp. - MD
2009/01/30
(443) 364-8
Landline
Bandwidth.com CLEC, LLC - MD
2008/11/12
(443) 364-9
Landline
Level 3 Communications, LLC - AK
2007/07/17
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 420-0
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 420-1
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 420-2
Wireless
T-mobile USA, Inc.
2018/09/11
(443) 420-3
Landline
Comcast IP Phone, LLC
2019/03/01
(443) 420-4
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 420-5
Landline
Twilio International, Inc.
2020/11/30
(443) 420-6
Landline
Onvoy, LLC - MD
2016/03/11
(443) 420-7
Landline
Bandwidth.com CLEC, LLC - MD
2010/01/26
(443) 420-8
Landline
Bandwidth.com CLEC, LLC - MD
2010/01/26
(443) 420-9
Landline
Onvoy, LLC - MD
2016/03/11
Landline
Us Lec of Maryland, Inc.
-
(443) 574-0
Landline
Us Lec of Maryland, Inc.
-
(443) 574-1
Landline
Us Lec of Maryland, Inc.
-
(443) 574-2
Landline
Us Lec of Maryland, Inc.
-
(443) 574-3
Landline
Us Lec of Maryland, Inc.
-
(443) 574-4
Landline
Bandwidth.com CLEC, LLC - MD
2010/09/28
(443) 574-5
Landline
Bandwidth.com CLEC, LLC - MD
2011/01/31
(443) 574-6
Landline
Bandwidth.com CLEC, LLC - MD
2011/07/20
(443) 574-7
Landline
Bandwidth.com CLEC, LLC - MD
2011/07/29
(443) 574-8
Landline
Paetec Communications, Inc. - CA
2003/05/02
(443) 574-9
Landline
Us Lec of Maryland, Inc.
-
(443) 638
Landline
Global Naps South, Inc. - MD
-
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
2001/05/11
(443) 828-0
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 828-1
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 828-2
Landline
Local Access LLC - MD
2013/08/12
(443) 828-3
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 828-4
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 828-5
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 828-6
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 828-7
Landline
Centurylink Communications, LLC LA
2014/05/27
(443) 828-8
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 828-9
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
Landline
Xo Maryland, LLC
-
(443) 973-0
Landline
Xo Maryland, LLC
2010/03/09
(443) 973-1
Wireless
New Cingular Wireless PCS, LLC
2019/09/18
(443) 973-2
Landline
Bandwidth.com CLEC, LLC - MD
2011/02/21
(443) 973-3
Landline
Mcimetro Access Transmission Services LLC
2008/09/11
(443) 973-4
Landline
Onvoy, LLC - MD
2014/08/07
(443) 973-5
Landline
Onvoy, LLC - MD
2014/10/07
(443) 973-6
Landline
Bandwidth.com CLEC, LLC - MD
2011/05/04
(443) 973-7
Landline
Peerless Network of Maryland, LLC
2013/04/04
(443) 973-8
Landline
Peerless Network of Maryland, LLC
2013/04/04
(443) 973-9
Landline
Xo Maryland, LLC
2001/11/07
Landline
Vonage America LLC
2020/05/05
(667) 280-0
Wireless
New Cingular Wireless PCS, LLC
2021/03/02
(667) 280-2
Landline
Radiantiq LLC
2021/03/23
(667) 280-3
Landline
Vonage America LLC
2020/05/06
(667) 280-4
Landline
Onvoy, LLC - MD
2021/02/03
(667) 280-5
Landline
Onvoy, LLC - MD
2021/02/03
(667) 280-6
Landline
Onvoy, LLC - MD
2021/02/03
(667) 280-7
Landline
Vonage America LLC
2020/05/06
(667) 280-8
Wireless
Onvoy Spectrum, LLC
2021/04/23
Landline
Core Communications, Inc.- MD
2018/10/15
(667) 686-0
Landline
Core Communications, Inc.- MD
2018/10/17
(667) 686-1
Landline
Core Communications, Inc.- MD
2018/10/17
(667) 686-2
Landline
Core Communications, Inc.- MD
2018/10/17
(667) 686-3
Landline
Core Communications, Inc.- MD
2018/10/17
(667) 686-4
Landline
Core Communications, Inc.- MD
2018/10/17
(667) 686-5
Landline
Core Communications, Inc.- MD
2018/10/17
(667) 686-6
Landline
Peerless Network of Maryland, LLC
2018/10/19
(667) 686-7
Wireless
New Cingular Wireless PCS, LLC
2019/01/10
(667) 686-8
Landline
Bandwidth.com CLEC, LLC - MD
2019/05/21
(667) 686-9
Landline
Bandwidth.com CLEC, LLC - MD
2019/04/11