Wireless
Sprint Spectrum, L.P.
2011/09/30
(410) 220-0
Landline
Peerless Network of Maryland, LLC
2013/04/04
(410) 220-1
Landline
Bandwidth.com CLEC, LLC - MD
2012/11/09
(410) 220-2
Landline
Onvoy, LLC - MD
2012/02/06
(410) 220-3
Landline
Comcast IP Phone, LLC
2012/11/12
(410) 220-4
Landline
Peerless Network of Maryland, LLC
2013/04/04
(410) 220-5
Landline
Bandwidth.com CLEC, LLC - MD
2013/05/21
(410) 220-6
Landline
Onvoy, LLC - MD
2013/07/15
(410) 220-7
Wireless
Sprint Spectrum, L.P.
2011/10/04
(410) 220-8
Wireless
Sprint Spectrum, L.P.
2011/10/04
(410) 220-9
Wireless
Sprint Spectrum, L.P.
2011/10/04
Wireless
Sprint Spectrum, L.P.
2004/07/15
(410) 300-0
Wireless
Sprint Spectrum, L.P.
2006/05/01
(410) 300-1
Wireless
Sprint Spectrum, L.P.
2004/07/20
(410) 300-2
Wireless
Sprint Spectrum, L.P.
2005/12/05
(410) 300-3
Wireless
Sprint Spectrum, L.P.
2005/12/05
(410) 300-4
Wireless
Sprint Spectrum, L.P.
2005/12/05
(410) 300-5
Wireless
Sprint Spectrum, L.P.
2004/07/20
(410) 300-6
Wireless
Sprint Spectrum, L.P.
2004/07/20
(410) 300-7
Wireless
Sprint Spectrum, L.P.
2004/07/20
(410) 300-8
Wireless
Sprint Spectrum, L.P.
2004/07/15
(410) 300-9
Wireless
Sprint Spectrum, L.P.
2004/07/15
(410) 331
Wireless
USA Mobility Wireless, Inc.
-
(410) 379
Landline
Verizon Maryland, Inc.
-
(410) 407
Landline
Verizon Maryland, Inc.
-
(410) 460
Wireless
USA Mobility Wireless, Inc.
-
(410) 471
Landline
Verizon Maryland, Inc.
-
(410) 478
Wireless
USA Mobility Wireless, Inc.
-
(410) 503
Landline
Verizon Maryland, Inc.
-
(410) 540
Landline
Verizon Maryland, Inc.
-
Landline
Teleport Communications America - ID - LLC
-
(410) 564-0
Landline
Teleport Communications America - ID - LLC
-
(410) 564-1
Wireless
Sprint Spectrum, L.P.
2011/09/29
(410) 564-2
Landline
Teleport Communications America - ID - LLC
-
(410) 564-3
Wireless
Sprint Spectrum, L.P.
2011/09/29
(410) 564-4
Wireless
Sprint Spectrum, L.P.
2007/06/26
(410) 564-5
Landline
Teleport Communications America - ID - LLC
-
(410) 564-6
Wireless
Sprint Spectrum, L.P.
2007/06/26
(410) 564-7
Wireless
Sprint Spectrum, L.P.
2007/06/26
(410) 564-8
Wireless
Sprint Spectrum, L.P.
2007/06/26
(410) 564-9
Wireless
Sprint Spectrum, L.P.
2006/07/17
Landline
Mcimetro Access Transmission Services LLC
-
(410) 567-0
Landline
Onvoy, LLC - MD
2013/10/25
(410) 567-1
Landline
Mcimetro Access Transmission Services LLC
-
(410) 567-2
Landline
Mcimetro Access Transmission Services LLC
-
(410) 567-3
Wireless
Sprint Spectrum, L.P.
2011/09/07
(410) 567-4
Landline
Core Communications, Inc.- MD
2004/03/01
(410) 567-5
Landline
Level 3 Communications, LLC - AK
2002/03/11
(410) 567-6
Wireless
Sprint Spectrum, L.P.
2011/09/07
(410) 567-7
Landline
Mcimetro Access Transmission Services LLC
2006/09/19
(410) 567-8
Landline
Mcimetro Access Transmission Services LLC
-
(410) 567-9
Landline
Mcimetro Access Transmission Services LLC
-
(410) 579
Landline
Verizon Maryland, Inc.
-
Wireless
Sprint Spectrum, L.P.
2006/07/31
(410) 660-0
Wireless
Sprint Spectrum, L.P.
2008/09/02
(410) 660-1
Wireless
Sprint Spectrum, L.P.
2008/09/02
(410) 660-2
Landline
Level 3 Communications, LLC - AK
2008/01/22
(410) 660-3
Wireless
Sprint Spectrum, L.P.
2009/10/15
(410) 660-5
Wireless
Sprint Spectrum, L.P.
2006/12/13
(410) 660-6
Wireless
Sprint Spectrum, L.P.
2006/12/13
(410) 660-7
Wireless
Sprint Spectrum, L.P.
2006/12/13
(410) 660-8
Wireless
Sprint Spectrum, L.P.
2009/10/15
(410) 660-9
Wireless
Sprint Spectrum, L.P.
2006/08/04
(410) 678
Wireless
USA Mobility Wireless, Inc.
-
(410) 712
Landline
Verizon Maryland, Inc.
-
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 717-0
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 717-1
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 717-2
Wireless
Sprint Spectrum, L.P.
2011/09/07
(410) 717-3
Wireless
Sprint Spectrum, L.P.
2011/09/07
(410) 717-4
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 717-5
Wireless
Sprint Spectrum, L.P.
2011/09/07
(410) 717-6
Wireless
Sprint Spectrum, L.P.
2009/11/27
(410) 717-7
Landline
Level 3 Telecom of Maryland, LLC - MD
-
(410) 717-8
Wireless
Sprint Spectrum, L.P.
2009/11/27
(410) 717-9
Landline
Level 3 Telecom of Maryland, LLC - MD
-
Landline
Verizon Maryland, Inc.
-
(410) 782-0
Landline
Level 3 Communications, LLC - AK
2006/03/13
(410) 782-1
Wireless
Sprint Spectrum, L.P.
2006/05/01
(410) 782-2
Landline
Verizon Maryland, Inc.
-
(410) 782-3
Landline
Level 3 Communications, LLC - AK
2004/01/16
(410) 782-4
Landline
Atx Telecommunications Services, Ltd
2003/02/03
(410) 782-5
Wireless
Sprint Spectrum, L.P.
2006/05/01
(410) 782-6
Landline
Vdl, Inc. DBA Global Telecom Brokers - MD
2004/01/21
(410) 782-7
Landline
Verizon Maryland, Inc.
-
(410) 782-8
Landline
Verizon Maryland, Inc.
-
(410) 782-9
Wireless
Sprint Spectrum, L.P.
2006/07/17
Landline
Verizon Maryland, Inc.
-
(410) 796-0
Landline
Verizon Maryland, Inc.
-
(410) 796-1
Landline
Verizon Maryland, Inc.
-
(410) 796-2
Landline
Verizon Maryland, Inc.
-
(410) 796-3
Landline
Verizon Maryland, Inc.
-
(410) 796-4
Landline
Verizon Maryland, Inc.
-
(410) 796-5
Landline
Verizon Maryland, Inc.
-
(410) 796-6
Landline
Verizon Maryland, Inc.
-
(410) 796-7
Landline
Verizon Maryland, Inc.
-
(410) 796-8
Landline
Verizon Maryland, Inc.
-
(410) 796-9
Landline
Verizon Maryland, Inc.
-
(410) 909
Wireless
USA Mobility Wireless, Inc.
-
(410) 932
Wireless
USA Mobility Wireless, Inc.
-
Landline
Verizon Maryland, Inc.
-
(443) 445-0
Landline
Bandwidth.com CLEC, LLC - MD
2010/01/26
(443) 445-1
Landline
Peerless Network of Maryland, LLC
2015/03/24
(443) 445-2
Landline
Level 3 Communications, LLC - AK
2006/05/31
(443) 445-3
Landline
Comcast IP Phone, LLC
2005/02/11
(443) 445-4
Landline
Xo Maryland, LLC
2005/01/30
(443) 445-5
Landline
Xo Maryland, LLC
2005/01/30
(443) 445-6
Landline
Xo Maryland, LLC
2005/01/30
(443) 445-7
Landline
Verizon Maryland, Inc.
2003/12/01
(443) 445-8
Landline
Verizon Maryland, Inc.
2003/12/01
(443) 445-9
Landline
Xo Maryland, LLC
2001/11/07
Landline
Paetec Communications, Inc. - CA
-
(443) 459-0
Landline
Paetec Communications, Inc. - CA
-
(443) 459-1
Landline
Bandwidth.com CLEC, LLC - MD
2010/09/21
(443) 459-2
Landline
Xo Maryland, LLC
2005/01/30
(443) 459-3
Landline
Paetec Communications, Inc. - CA
2004/08/13
(443) 459-4
Landline
Level 3 Communications, LLC - AK
2005/07/18
(443) 459-5
Landline
Xo Maryland, LLC
2005/11/15
(443) 459-6
Wireless
Sprint Spectrum, L.P.
2011/09/07
(443) 459-7
Wireless
Sprint Spectrum, L.P.
2011/09/07
(443) 459-8
Landline
Xo Maryland, LLC
2005/11/15
(443) 459-9
Landline
Xo Maryland, LLC
2005/11/15
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 492-0
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 492-1
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 492-2
Landline
Level 3 Communications, LLC - AK
2008/01/31
(443) 492-3
Landline
Level 3 Communications, LLC - AK
2008/01/31
(443) 492-4
Landline
Global Crossing Local Services, Inc. - KY
-
(443) 492-5
Landline
Level 3 Communications, LLC - AK
-
(443) 492-6
Landline
Ctc Communications Corp. - MD
2008/07/22
(443) 492-7
Wireless
Sprint Spectrum, L.P.
2011/09/07
(443) 492-8
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 492-9
Landline
Bandwidth.com CLEC, LLC - MD
2008/11/12
Landline
Us Lec of Maryland, Inc.
-
(443) 561-0
Landline
Us Lec of Maryland, Inc.
-
(443) 561-1
Landline
Us Lec of Maryland, Inc.
-
(443) 561-2
Landline
Us Lec of Maryland, Inc.
-
(443) 561-3
Landline
Us Lec of Maryland, Inc.
-
(443) 561-4
Wireless
New Cingular Wireless PCS, LLC
2009/03/23
(443) 561-5
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 561-6
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 561-7
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 561-8
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 561-9
Landline
Us Lec of Maryland, Inc.
-
Landline
Core Communications, Inc.- MD
-
(443) 592-3
Landline
Comcast IP Phone, LLC
2017/03/20
(443) 592-5
Landline
Core Communications, Inc.- MD
2018/05/23
(443) 592-6
Landline
Core Communications, Inc.- MD
2018/05/23
(443) 592-7
Landline
Core Communications, Inc.- MD
2018/05/23
(443) 592-8
Landline
Local Access LLC - MD
2019/03/27
(443) 592-9
Landline
Terra Nova Telecom Inc.
2020/12/30
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
2001/05/11
(443) 757-0
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 757-1
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 757-2
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 757-3
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 757-4
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 757-5
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 757-6
Wireless
Sprint Spectrum, L.P.
2011/03/03
(443) 757-7
Wireless
Sprint Spectrum, L.P.
2010/11/01
(443) 757-8
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
(443) 757-9
Landline
Cavalier Telephone Mid-atlantic, LLC - MD
-
Landline
Bandwidth.com CLEC, LLC - MD
2014/01/17
(443) 776-0
Landline
Bandwidth.com CLEC, LLC - MD
2014/01/20
(443) 776-1
Landline
Bandwidth.com CLEC, LLC - MD
2014/01/20
(443) 776-2
Landline
Onvoy, LLC - MD
2014/09/03
(443) 776-3
Landline
Comcast IP Phone, LLC
2014/07/21
(443) 776-4
Landline
Onvoy, LLC - MD
2014/09/03
(443) 776-5
Landline
Mcimetro Access Transmission Services LLC
2015/01/16
(443) 776-6
Landline
Baltimore-washington Telephone (Bwt)
2015/05/18
(443) 776-7
Landline
Centurylink Communications, LLC LA
2014/05/27
(443) 776-8
Landline
Bandwidth.com CLEC, LLC - MD
2015/06/08
(443) 776-9
Landline
Local Access LLC - MD
2015/02/23
Landline
Paetec Communications, Inc. - CA
-
(443) 820-0
Landline
Paetec Communications, Inc. - CA
-
(443) 820-1
Landline
Paetec Communications, Inc. - CA
-
(443) 820-2
Landline
Mcimetro Access Transmission Services LLC
2009/07/16
(443) 820-3
Landline
Comcast IP Phone, LLC
2007/01/09
(443) 820-4
Landline
Mcimetro Access Transmission Services LLC
2008/09/11
(443) 820-5
Wireless
Sprint Spectrum, L.P.
2010/11/01
(443) 820-6
Wireless
Sprint Spectrum, L.P.
2010/11/01
(443) 820-7
Wireless
Sprint Spectrum, L.P.
2010/11/01
(443) 820-8
Wireless
Sprint Spectrum, L.P.
2010/11/01
(443) 820-9
Landline
Paetec Communications, Inc. - CA
-
Wireless
New Cingular Wireless PCS, LLC
2017/02/23
(443) 936-0
Landline
Telnyx LLC
2017/03/02
(443) 936-2
Landline
Core Communications, Inc.- MD
2019/03/14
(443) 936-3
Landline
Core Communications, Inc.- MD
2019/07/12
(443) 936-4
Landline
Core Communications, Inc.- MD
2019/07/12
(443) 936-5
Wireless
New Cingular Wireless PCS, LLC
2018/11/02
(443) 936-6
Landline
Centurylink Communications, LLC LA
2018/09/24
(443) 936-7
Wireless
New Cingular Wireless PCS, LLC
2018/03/05
(443) 936-8
Wireless
New Cingular Wireless PCS, LLC
2017/09/20
(443) 936-9
Wireless
New Cingular Wireless PCS, LLC
2017/02/23
Wireless
New Cingular Wireless PCS, LLC
2019/10/11
(667) 274-0
Landline
Peerless Network of Maryland, LLC
2020/09/30
(667) 274-1
Landline
Teleport Communications America - ID - LLC
2020/07/22
(667) 274-2
Landline
Twilio International, Inc.
2020/11/25
(667) 274-4
Wireless
New Cingular Wireless PCS, LLC
2021/07/19
(667) 274-5
Landline
Peerless Network of Maryland, LLC
2021/06/17
(667) 274-6
Wireless
Onvoy Spectrum, LLC
2021/04/23
(667) 274-7
Landline
Radiantiq LLC
2021/03/23
(667) 274-8
Wireless
New Cingular Wireless PCS, LLC
2019/10/11
(667) 274-9
Wireless
New Cingular Wireless PCS, LLC
2019/10/11
Wireless
New Cingular Wireless PCS, LLC
2015/10/19
(667) 701-0
Landline
Onvoy, LLC - MD
2015/11/12
(667) 701-1
Landline
Onvoy, LLC - MD
2015/12/30
(667) 701-2
Wireless
New Cingular Wireless PCS, LLC
2016/08/22
(667) 701-3
Landline
Onvoy, LLC - MD
2016/02/12
(667) 701-4
Landline
Onvoy, LLC - MD
2016/02/12
(667) 701-5
Wireless
New Cingular Wireless PCS, LLC
2016/03/21
(667) 701-6
Landline
Local Access LLC - MD
2016/09/15
(667) 701-7
Unknown
Barr Tell USA, Inc.
2016/11/18
(667) 701-8
Landline
Local Access LLC - MD
2015/12/07
(667) 701-9
Wireless
New Cingular Wireless PCS, LLC
2015/10/20
Landline
Onvoy, LLC - MD
2015/03/23
(667) 999-0
Landline
Onvoy, LLC - MD
2015/06/30
(667) 999-1
Landline
Onvoy, LLC - MD
2015/06/30
(667) 999-2
Landline
Onvoy, LLC - MD
2015/06/30
(667) 999-3
Landline
Onvoy, LLC - MD
2015/06/30
(667) 999-4
Landline
Onvoy, LLC - MD
2015/03/25
(667) 999-5
Landline
Onvoy, LLC - MD
2015/06/30
(667) 999-6
Landline
Onvoy, LLC - MD
2015/06/30
(667) 999-7
Landline
Onvoy, LLC - MD
2015/03/25
(667) 999-8
Landline
Onvoy, LLC - MD
2015/03/25
(667) 999-9
Landline
Onvoy, LLC - MD
2015/03/25