Frederick, Maryland Area Codes

240 301
Map of Frederick Local time Prefixes

Map of Frederick

Local time – 1 timezone

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Atlantic timezone

Prefixes – 78 codes

Prefix
Type
Location
Carrier
Assigned
Landline
Level 3 Communications, LLC - AK
-
(240) 215-0
Landline
Level 3 Communications, LLC - AK
-
(240) 215-1
Landline
Level 3 Communications, LLC - AK
-
(240) 215-2
Landline
AT&T - Local
2002/02/14
(240) 215-3
Landline
Level 3 Communications, LLC - AK
2005/01/26
(240) 215-4
Landline
Level 3 Communications, LLC - AK
2002/05/17
(240) 215-5
Wireless
Cellco Partnership DBA Verizon Wireless
2005/05/05
(240) 215-6
Landline
Level 3 Communications, LLC - AK
-
(240) 215-7
Wireless
Cellco Partnership DBA Verizon Wireless
2005/05/05
(240) 215-8
Landline
Level 3 Communications, LLC - AK
-
(240) 215-9
Landline
Level 3 Communications, LLC - AK
-
(240) 225
Landline
Core Communications, Inc.- MD
-
Landline
Verizon Maryland, Inc.
-
(240) 236-0
Landline
Verizon Maryland, Inc.
-
(240) 236-1
Landline
Verizon Maryland, Inc.
-
(240) 236-2
Landline
Verizon Maryland, Inc.
-
(240) 236-3
Landline
Verizon Maryland, Inc.
-
(240) 236-4
Landline
Verizon Maryland, Inc.
-
(240) 236-5
Landline
Verizon Maryland, Inc.
-
(240) 236-6
Landline
Verizon Maryland, Inc.
2002/05/17
(240) 236-7
Landline
Verizon Maryland, Inc.
-
(240) 236-8
Landline
Verizon Maryland, Inc.
-
(240) 236-9
Landline
Level 3 Communications, LLC - AK
2015/01/13
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 285-0
Wireless
Cellco Partnership DBA Verizon Wireless
2003/08/06
(240) 285-1
Wireless
Cellco Partnership DBA Verizon Wireless
2003/10/03
(240) 285-2
Wireless
Cellco Partnership DBA Verizon Wireless
2004/09/08
(240) 285-3
Wireless
Cellco Partnership DBA Verizon Wireless
2004/10/08
(240) 285-4
Wireless
Cellco Partnership DBA Verizon Wireless
2004/11/02
(240) 285-5
Wireless
Cellco Partnership DBA Verizon Wireless
2003/06/02
(240) 285-6
Wireless
Cellco Partnership DBA Verizon Wireless
2004/04/05
(240) 285-7
Wireless
Cellco Partnership DBA Verizon Wireless
2003/07/02
(240) 285-8
Wireless
Cellco Partnership DBA Verizon Wireless
2003/07/02
(240) 285-9
Landline
Bandwidth.com CLEC, LLC - MD
2010/03/04
Prefix
Type
Location
Carrier
Assigned
Landline
Verizon Maryland, Inc.
-
(240) 315-0
Landline
Verizon Maryland, Inc.
-
(240) 315-1
Wireless
Sprint Spectrum, L.P.
2004/09/08
(240) 315-2
Wireless
Sprint Spectrum, L.P.
2004/11/30
(240) 315-3
Wireless
Cellco Partnership DBA Verizon Wireless
2004/12/06
(240) 315-4
Wireless
Cellco Partnership DBA Verizon Wireless
2004/12/06
(240) 315-5
Wireless
Cellco Partnership DBA Verizon Wireless
2004/12/06
(240) 315-6
Wireless
Cellco Partnership DBA Verizon Wireless
2005/03/03
(240) 315-7
Wireless
Cellco Partnership DBA Verizon Wireless
2005/04/06
(240) 315-8
Wireless
Cellco Partnership DBA Verizon Wireless
2005/06/02
(240) 315-9
Wireless
Cellco Partnership DBA Verizon Wireless
2019/08/12
Wireless
New Cingular Wireless PCS, LLC
2002/10/15
(240) 344-0
Wireless
New Cingular Wireless PCS, LLC
2002/10/31
(240) 344-1
Wireless
New Cingular Wireless PCS, LLC
2002/10/08
(240) 344-2
Wireless
New Cingular Wireless PCS, LLC
2004/01/30
(240) 344-3
Wireless
New Cingular Wireless PCS, LLC
2003/09/22
(240) 344-4
Wireless
New Cingular Wireless PCS, LLC
2004/06/08
(240) 344-5
Wireless
New Cingular Wireless PCS, LLC
2004/07/30
(240) 344-6
Wireless
New Cingular Wireless PCS, LLC
2004/10/01
(240) 344-7
Wireless
New Cingular Wireless PCS, LLC
2004/10/01
(240) 344-8
Wireless
New Cingular Wireless PCS, LLC
2004/12/13
(240) 344-9
Wireless
New Cingular Wireless PCS, LLC
2006/12/27
Wireless
Cellco Partnership DBA Verizon Wireless
2006/06/12
(240) 357-0
Wireless
Cellco Partnership DBA Verizon Wireless
2006/06/19
(240) 357-1
Wireless
Cellco Partnership DBA Verizon Wireless
2007/07/03
(240) 357-2
Wireless
New Cingular Wireless PCS, LLC
2007/09/21
(240) 357-3
Wireless
Cellco Partnership DBA Verizon Wireless
2007/11/28
(240) 357-4
Wireless
Cellco Partnership DBA Verizon Wireless
2006/10/04
(240) 357-5
Wireless
Cellco Partnership DBA Verizon Wireless
2007/05/02
(240) 357-6
Wireless
Cellco Partnership DBA Verizon Wireless
2007/05/02
(240) 357-7
Wireless
Cellco Partnership DBA Verizon Wireless
2007/06/04
(240) 357-8
Wireless
Cellco Partnership DBA Verizon Wireless
2008/02/05
Wireless
Sprint Spectrum, L.P.
2002/10/18
(240) 367-0
Wireless
Sprint Spectrum, L.P.
2003/06/30
(240) 367-1
Wireless
Sprint Spectrum, L.P.
2005/03/28
(240) 367-2
Wireless
Omnipoint Communications Cap Operations, LLC
2005/09/02
(240) 367-3
Wireless
Omnipoint Communications Cap Operations, LLC
2006/12/13
(240) 367-4
Wireless
New Cingular Wireless PCS, LLC
2006/02/22
(240) 367-5
Wireless
New Cingular Wireless PCS, LLC
2006/02/22
(240) 367-6
Wireless
Sprint Spectrum, L.P.
-
(240) 367-7
Wireless
Sprint Spectrum, L.P.
2003/03/17
(240) 367-8
Wireless
Sprint Spectrum, L.P.
2006/05/01
(240) 367-9
Landline
Bandwidth.com CLEC, LLC - MD
2004/10/13
(240) 379
Landline
Verizon Maryland, Inc.
-
Wireless
Cellco Partnership DBA Verizon Wireless
2009/03/06
(240) 397-0
Wireless
Cellco Partnership DBA Verizon Wireless
2009/03/12
(240) 397-1
Wireless
Cellco Partnership DBA Verizon Wireless
2009/09/03
(240) 397-2
Landline
Us Lec of Maryland, Inc.
2009/10/23
(240) 397-3
Wireless
Cellco Partnership DBA Verizon Wireless
2010/01/07
(240) 397-4
Wireless
Cellco Partnership DBA Verizon Wireless
2010/04/05
(240) 397-5
Landline
Bandwidth.com CLEC, LLC - MD
2010/11/03
(240) 397-6
Landline
Bandwidth.com CLEC, LLC - MD
2010/05/28
(240) 397-7
Landline
Mcimetro Access Transmission Services LLC
2009/07/06
(240) 397-8
Landline
Bandwidth.com CLEC, LLC - MD
2010/01/26
(240) 397-9
Landline
Bandwidth.com CLEC, LLC - MD
2010/01/26
Prefix
Type
Location
Carrier
Assigned
Landline
Us Lec of Maryland, Inc.
2004/07/27
(240) 405-0
Wireless
Sprint Spectrum, L.P.
2005/03/23
(240) 405-1
Landline
Us Lec of Maryland, Inc.
2004/07/27
(240) 405-2
Wireless
Cellco Partnership DBA Verizon Wireless
2005/08/02
(240) 405-3
Wireless
Sprint Spectrum, L.P.
2005/08/23
(240) 405-4
Wireless
Cellco Partnership DBA Verizon Wireless
2005/07/07
(240) 405-5
Wireless
Cellco Partnership DBA Verizon Wireless
2005/07/07
(240) 405-6
Wireless
Cellco Partnership DBA Verizon Wireless
2005/11/03
(240) 405-7
Wireless
Cellco Partnership DBA Verizon Wireless
2005/11/03
(240) 405-8
Wireless
Cellco Partnership DBA Verizon Wireless
2005/11/03
(240) 405-9
Wireless
Cellco Partnership DBA Verizon Wireless
2008/02/05
(240) 409
Wireless
New Cingular Wireless PCS, LLC
-
Landline
Ymax Communications Corp. - MD
2008/12/16
(240) 415-0
Landline
Ymax Communications Corp. - MD
2008/12/18
(240) 415-1
Landline
Ymax Communications Corp. - MD
2008/12/18
(240) 415-2
Landline
Ymax Communications Corp. - MD
2008/12/18
(240) 415-3
Landline
Ymax Communications Corp. - MD
2008/12/18
(240) 415-4
Landline
Ymax Communications Corp. - MD
2008/12/18
(240) 415-5
Landline
Fibernet, LLC - WV
2010/12/08
(240) 415-6
Landline
Level 3 Communications, LLC - AK
2011/08/08
(240) 415-7
Landline
Us Lec of Maryland, Inc.
2011/02/15
(240) 415-8
Landline
Bandwidth.com CLEC, LLC - MD
2011/05/03
(240) 415-9
Landline
Bandwidth.com CLEC, LLC - MD
2011/05/03
Wireless
Omnipoint Communications Cap Operations, LLC
2002/05/15
(240) 422-0
Wireless
Omnipoint Communications Cap Operations, LLC
-
(240) 422-1
Wireless
Omnipoint Communications Cap Operations, LLC
2003/04/09
(240) 422-2
Wireless
Omnipoint Communications Cap Operations, LLC
2003/06/05
(240) 422-3
Wireless
Omnipoint Communications Cap Operations, LLC
2003/08/25
(240) 422-4
Wireless
Omnipoint Communications Cap Operations, LLC
2004/01/29
(240) 422-5
Wireless
Omnipoint Communications Cap Operations, LLC
2004/11/23
(240) 422-6
Wireless
Omnipoint Communications Cap Operations, LLC
-
(240) 422-7
Wireless
Omnipoint Communications Cap Operations, LLC
2005/01/21
(240) 422-8
Landline
Bandwidth.com CLEC, LLC - MD
2011/06/07
(240) 422-9
Wireless
Omnipoint Communications Cap Operations, LLC
-
Wireless
Cellco Partnership DBA Verizon Wireless
2008/06/06
(240) 439-0
Wireless
Cellco Partnership DBA Verizon Wireless
2008/06/09
(240) 439-1
Wireless
Omnipoint Communications Cap Operations, LLC
2008/09/12
(240) 439-2
Landline
Verizon Maryland, Inc.
2008/08/15
(240) 439-3
Wireless
Cellco Partnership DBA Verizon Wireless
2011/04/04
(240) 439-4
Landline
Comcast IP Phone, LLC
2010/06/04
(240) 439-5
Wireless
Sprint Spectrum, L.P.
2010/07/06
(240) 439-6
Landline
Level 3 Communications, LLC - AK
2010/04/15
(240) 439-7
Wireless
Sprint Spectrum, L.P.
2010/07/06
(240) 439-8
Landline
Level 3 Communications, LLC - AK
2009/08/03
(240) 439-9
Wireless
Cellco Partnership DBA Verizon Wireless
2008/09/03
Wireless
New Cingular Wireless PCS, LLC
2009/02/27
(240) 440-0
Wireless
New Cingular Wireless PCS, LLC
2009/03/04
(240) 440-1
Wireless
New Cingular Wireless PCS, LLC
2009/03/04
(240) 440-2
Wireless
New Cingular Wireless PCS, LLC
2009/03/04
(240) 440-3
Wireless
New Cingular Wireless PCS, LLC
2010/06/11
(240) 440-4
Wireless
Cellco Partnership DBA Verizon Wireless
2010/12/13
(240) 440-5
Wireless
Sprint Spectrum, L.P.
2011/09/29
(240) 440-6
Wireless
Sprint Spectrum, L.P.
2011/09/29
(240) 440-7
Wireless
Sprint Spectrum, L.P.
2011/03/07
(240) 440-8
Wireless
Sprint Spectrum, L.P.
2011/03/07
(240) 440-9
Wireless
Sprint Spectrum, L.P.
2011/03/07
Wireless
Cellco Partnership DBA Verizon Wireless
2001/08/09
(240) 446-0
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 446-1
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 446-2
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 446-3
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 446-4
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 446-5
Wireless
Cellco Partnership DBA Verizon Wireless
2003/03/04
(240) 446-6
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 446-7
Wireless
Cellco Partnership DBA Verizon Wireless
2003/05/06
(240) 446-8
Wireless
Cellco Partnership DBA Verizon Wireless
2003/05/06
(240) 446-9
Wireless
Cellco Partnership DBA Verizon Wireless
-
Wireless
Cellco Partnership DBA Verizon Wireless
2008/09/04
(240) 457-0
Wireless
Cellco Partnership DBA Verizon Wireless
2008/09/09
(240) 457-1
Wireless
Cellco Partnership DBA Verizon Wireless
2010/06/03
(240) 457-2
Wireless
Cellco Partnership DBA Verizon Wireless
2011/01/04
(240) 457-3
Wireless
Cellco Partnership DBA Verizon Wireless
2011/06/15
(240) 457-4
Landline
Comcast IP Phone, LLC
2011/06/08
(240) 457-5
Wireless
Sprint Spectrum, L.P.
2011/09/29
(240) 457-6
Wireless
Sprint Spectrum, L.P.
2011/09/29
(240) 457-7
Wireless
Cellco Partnership DBA Verizon Wireless
2009/08/05
(240) 457-8
Wireless
Sprint Spectrum, L.P.
2011/06/27
(240) 457-9
Landline
Bandwidth.com CLEC, LLC - MD
2009/01/09
Prefix
Type
Location
Carrier
Assigned
Landline
Verizon Maryland, Inc.
-
(240) 529-0
Landline
Verizon Maryland, Inc.
-
(240) 529-1
Landline
Verizon Maryland, Inc.
-
(240) 529-2
Wireless
New Cingular Wireless PCS, LLC
2004/12/13
(240) 529-3
Wireless
New Cingular Wireless PCS, LLC
2005/05/17
(240) 529-4
Wireless
New Cingular Wireless PCS, LLC
2005/05/17
(240) 529-5
Wireless
New Cingular Wireless PCS, LLC
2005/10/10
(240) 529-6
Wireless
New Cingular Wireless PCS, LLC
2005/12/07
(240) 529-7
Wireless
New Cingular Wireless PCS, LLC
2006/01/10
(240) 529-8
Wireless
New Cingular Wireless PCS, LLC
2006/01/10
(240) 529-9
Wireless
Sprint Spectrum, L.P.
2006/06/02
Wireless
Cellco Partnership DBA Verizon Wireless
2016/03/17
(240) 549-0
Wireless
Omnipoint Communications Cap Operations, LLC
2016/06/16
(240) 549-1
Wireless
Omnipoint Communications Cap Operations, LLC
2016/11/09
(240) 549-2
Wireless
Cellco Partnership DBA Verizon Wireless
2016/12/05
(240) 549-3
Wireless
Cellco Partnership DBA Verizon Wireless
2017/06/29
(240) 549-4
Wireless
New Cingular Wireless PCS, LLC
2016/07/22
(240) 549-5
Landline
Onvoy, LLC - MD
2017/10/16
(240) 549-6
Landline
Onvoy, LLC - MD
2017/10/16
(240) 549-7
Wireless
Brightlink Communications, LLC
2018/01/30
(240) 549-8
Landline
Peerless Network of Maryland, LLC
2018/02/07
(240) 549-9
Wireless
Cellco Partnership DBA Verizon Wireless
2016/03/17
Landline
Verizon Maryland, Inc.
2002/06/11
(240) 566-0
Landline
Verizon Maryland, Inc.
2002/06/12
(240) 566-1
Landline
Us Lec of Maryland, Inc.
2006/01/13
(240) 566-2
Wireless
New Cingular Wireless PCS, LLC
2006/08/15
(240) 566-3
Landline
Level 3 Communications, LLC - AK
2002/08/27
(240) 566-4
Landline
Level 3 Communications, LLC - AK
2002/08/27
(240) 566-5
Landline
Level 3 Communications, LLC - AK
2006/08/17
(240) 566-6
Wireless
Cellco Partnership DBA Verizon Wireless
2008/05/06
(240) 566-7
Landline
Fibernet, LLC - WV
2008/08/04
(240) 566-8
Wireless
Sprint Spectrum, L.P.
2006/05/04
(240) 566-9
Landline
Verizon Maryland, Inc.
2002/06/12
Landline
Level 3 Communications, LLC - AK
2005/12/30
(240) 575-0
Wireless
Omnipoint Communications Cap Operations, LLC
2007/05/18
(240) 575-1
Landline
Level 3 Communications, LLC - AK
2007/06/21
(240) 575-2
Landline
Level 3 Communications, LLC - AK
2007/07/17
(240) 575-3
Landline
Level 3 Communications, LLC - AK
2007/07/17
(240) 575-4
Wireless
Cellco Partnership DBA Verizon Wireless
2008/03/05
(240) 575-5
Landline
Level 3 Communications, LLC - AK
2006/01/04
(240) 575-6
Landline
Level 3 Communications, LLC - AK
2006/01/04
(240) 575-7
Landline
Us Lec of Maryland, Inc.
2008/04/02
(240) 575-8
Wireless
New Cingular Wireless PCS, LLC
2007/08/08
(240) 575-9
Landline
Comcast IP Phone, LLC
2008/03/07
Wireless
Cellco Partnership DBA Verizon Wireless
2011/07/08
(240) 578-0
Wireless
Cellco Partnership DBA Verizon Wireless
2011/07/08
(240) 578-1
Wireless
Cellco Partnership DBA Verizon Wireless
2011/09/02
(240) 578-2
Wireless
Cellco Partnership DBA Verizon Wireless
2012/05/04
(240) 578-3
Wireless
Cellco Partnership DBA Verizon Wireless
2013/03/28
(240) 578-4
Landline
Comcast IP Phone, LLC
2013/12/17
(240) 578-5
Wireless
Cellco Partnership DBA Verizon Wireless
2014/01/07
(240) 578-6
Wireless
Sprint Spectrum, L.P.
2011/09/29
(240) 578-7
Wireless
Sprint Spectrum, L.P.
2011/09/29
(240) 578-8
Wireless
Sprint Spectrum, L.P.
2011/09/29
(240) 578-9
Wireless
Sprint Spectrum, L.P.
2011/09/29
Landline
Verizon Maryland, Inc.
2006/12/22
(240) 586-0
Wireless
New Cingular Wireless PCS, LLC
2007/11/06
(240) 586-1
Wireless
New Cingular Wireless PCS, LLC
2007/11/06
(240) 586-2
Wireless
Omnipoint Communications Cap Operations, LLC
2008/06/17
(240) 586-3
Wireless
Sprint Spectrum, L.P.
2007/04/03
(240) 586-4
Wireless
Sprint Spectrum, L.P.
2007/04/03
(240) 586-5
Landline
Verizon Maryland, Inc.
2006/12/27
(240) 586-6
Landline
Verizon Maryland, Inc.
2006/12/27
(240) 586-7
Landline
Verizon Maryland, Inc.
2006/12/27
(240) 586-8
Landline
Verizon Maryland, Inc.
2006/12/27
(240) 586-9
Wireless
Sprint Spectrum, L.P.
2007/04/03
Prefix
Type
Location
Carrier
Assigned
Wireless
Brightlink Communications, LLC
2013/03/11
(240) 608-0
Wireless
Omnipoint Communications Cap Operations, LLC
2013/06/26
(240) 608-1
Wireless
Brightlink Communications, LLC
2013/03/13
(240) 608-2
Landline
Bandwidth.com CLEC, LLC - MD
2014/05/02
(240) 608-3
Landline
Us Lec of Maryland, Inc.
2014/01/28
(240) 608-4
Landline
Bandwidth.com CLEC, LLC - MD
2014/05/02
(240) 608-5
Wireless
Cellco Partnership DBA Verizon Wireless
2014/06/17
(240) 608-6
Landline
Level 3 Communications, LLC - AK
2014/01/22
(240) 608-7
Wireless
Cellco Partnership DBA Verizon Wireless
2015/03/26
(240) 608-8
Wireless
Omnipoint Communications Cap Operations, LLC
2013/11/12
(240) 608-9
Wireless
Omnipoint Communications Cap Operations, LLC
2013/11/12
Wireless
Sprint Spectrum, L.P.
-
(240) 626-0
Wireless
Sprint Spectrum, L.P.
2009/12/21
(240) 626-1
Wireless
Sprint Spectrum, L.P.
-
(240) 626-2
Landline
Verizon Maryland, Inc.
2005/11/15
(240) 626-3
Wireless
Sprint Spectrum, L.P.
-
(240) 626-4
Wireless
Sprint Spectrum, L.P.
-
(240) 626-5
Wireless
Sprint Spectrum, L.P.
-
(240) 626-6
Wireless
Sprint Spectrum, L.P.
-
(240) 626-7
Wireless
Sprint Spectrum, L.P.
-
(240) 626-8
Wireless
Sprint Spectrum, L.P.
-
(240) 626-9
Wireless
Sprint Spectrum, L.P.
-
Landline
Verizon Maryland, Inc.
-
(240) 629-0
Landline
Verizon Maryland, Inc.
-
(240) 629-1
Landline
Verizon Maryland, Inc.
-
(240) 629-2
Landline
Verizon Maryland, Inc.
-
(240) 629-3
Landline
Verizon Maryland, Inc.
-
(240) 629-4
Landline
Verizon Maryland, Inc.
-
(240) 629-5
Landline
Verizon Maryland, Inc.
-
(240) 629-6
Landline
Verizon Maryland, Inc.
-
(240) 629-7
Landline
Verizon Maryland, Inc.
-
(240) 629-8
Landline
Comcast IP Phone, LLC
2008/08/08
(240) 629-9
Landline
Verizon Maryland, Inc.
-
Wireless
Cellco Partnership DBA Verizon Wireless
-
(240) 651-0
Landline
Comcast IP Phone, LLC
2014/04/16
(240) 651-1
Landline
Comcast IP Phone, LLC
2015/10/30
(240) 651-2
Landline
Level 3 Communications, LLC - AK
2014/08/05
(240) 651-3
Landline
Comcast IP Phone, LLC
2014/08/06
(240) 651-4
Wireless
Cellco Partnership DBA Verizon Wireless
2015/06/01
(240) 651-5
Landline
Comcast IP Phone, LLC
2012/06/01
(240) 651-6
Landline
Level 3 Communications, LLC - AK
2014/09/29
(240) 651-7
Landline
Mcimetro Access Transmission Services LLC
2017/03/27
(240) 651-8
Landline
Level 3 Communications, LLC - AK
2014/10/29
(240) 651-9
Wireless
Omnipoint Communications Cap Operations, LLC
2014/02/26
Wireless
New Cingular Wireless PCS, LLC
2019/08/30
(240) 656-0
Wireless
New Cingular Wireless PCS, LLC
2021/01/27
(240) 656-1
Landline
Comcast IP Phone, LLC
2021/02/12
(240) 656-2
Landline
Onvoy, LLC - MD
2019/12/09
(240) 656-3
Landline
Onvoy, LLC - MD
2019/12/09
(240) 656-4
Wireless
T-mobile USA, Inc.
2020/06/16
(240) 656-5
Wireless
New Cingular Wireless PCS, LLC
2020/09/28
(240) 656-6
Landline
Peerless Network of Maryland, LLC
2020/09/30
(240) 656-7
Wireless
T-mobile USA, Inc.
2020/10/01
(240) 656-8
Wireless
New Cingular Wireless PCS, LLC
2019/08/30
(240) 656-9
Wireless
New Cingular Wireless PCS, LLC
2019/08/30
(240) 674
Wireless
Sprint Spectrum, L.P.
-
Landline
Peerless Network of Maryland, LLC
2018/10/29
(240) 680-0
Landline
Vonage America LLC
2018/11/23
(240) 680-1
Landline
Vonage America LLC
2018/11/23
(240) 680-2
Landline
Vonage America LLC
2018/11/23
(240) 680-3
Landline
Vonage America LLC
2018/11/23
(240) 680-4
Landline
Vonage America LLC
2018/11/23
(240) 680-5
Landline
Vonage America LLC
2018/11/23
(240) 680-6
Landline
Vonage America LLC
2018/11/23
(240) 680-7
Landline
Vonage America LLC
2018/11/23
(240) 680-8
Landline
Vonage America LLC
2018/11/23
(240) 680-9
Landline
Peerless Network of Maryland, LLC
2018/10/30
Prefix
Type
Location
Carrier
Assigned
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-0
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-1
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-2
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-3
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-4
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-5
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-6
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-7
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-8
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
(240) 710-9
Landline
Mcimetro Access Transmission Services LLC
2019/12/30
Landline
Ip Horizon LLC
2020/09/15
(240) 739-0
Wireless
Cellco Partnership DBA Verizon Wireless
2020/11/12
(240) 739-1
Landline
Ip Horizon LLC
2020/09/17
(240) 739-2
Wireless
Cellco Partnership DBA Verizon Wireless
2020/11/12
(240) 739-3
Landline
Comcast IP Phone, LLC
2021/02/12
(240) 739-4
Wireless
T-mobile USA, Inc.
2020/12/07
(240) 739-5
Unknown
Shentel Communications, LLC. - MD
2021/06/29
(240) 739-6
Landline
Onvoy, LLC - MD
2021/07/21
(240) 739-7
Landline
Onvoy, LLC - MD
2021/07/21
Landline
Airespring, Inc.
2020/10/01
(240) 741-0
Landline
Airespring, Inc.
2020/10/02
(240) 741-1
Wireless
T-mobile USA, Inc.
2021/03/29
(240) 741-2
Wireless
Cellco Partnership DBA Verizon Wireless
2021/06/22
(240) 741-3
Wireless
Cellco Partnership DBA Verizon Wireless
2021/06/22
(240) 741-4
Wireless
Onvoy Spectrum, LLC
2021/04/27
(240) 741-5
Wireless
Onvoy Spectrum, LLC
2021/01/27
(240) 741-6
Wireless
Onvoy Spectrum, LLC
2021/01/27
(240) 741-7
Wireless
Onvoy Spectrum, LLC
2021/01/27
(240) 741-8
Wireless
Onvoy Spectrum, LLC
2021/01/27
(240) 741-9
Wireless
Omnipoint Communications Cap Operations, LLC
2021/03/29
Wireless
Cellco Partnership DBA Verizon Wireless
2011/11/17
(240) 772-0
Wireless
Cellco Partnership DBA Verizon Wireless
2011/11/17
(240) 772-1
Landline
Bandwidth.com CLEC, LLC - MD
2012/09/13
(240) 772-2
Wireless
Cellco Partnership DBA Verizon Wireless
2013/10/01
(240) 772-3
Landline
Mcimetro Access Transmission Services LLC
2012/07/12
(240) 772-4
Wireless
Omnipoint Communications Cap Operations, LLC
2012/09/20
(240) 772-5
Landline
Level 3 Communications, LLC - AK
2012/09/13
(240) 772-6
Wireless
Cellco Partnership DBA Verizon Wireless
2014/05/22
(240) 772-7
Wireless
Cellco Partnership DBA Verizon Wireless
2014/05/22
(240) 772-8
Wireless
T-mobile USA, Inc.
2013/07/02
(240) 772-9
Landline
Level 3 Communications, LLC - AK
2014/05/28
Prefix
Type
Location
Carrier
Assigned
Wireless
Cellco Partnership DBA Verizon Wireless
2015/11/17
(240) 815-0
Wireless
Cellco Partnership DBA Verizon Wireless
2015/11/18
(240) 815-1
Wireless
Cellco Partnership DBA Verizon Wireless
2017/06/29
(240) 815-2
Wireless
T-mobile USA, Inc.
2016/02/22
(240) 815-3
Wireless
T-mobile USA, Inc.
2016/02/22
(240) 815-4
Wireless
T-mobile USA, Inc.
2016/02/22
(240) 815-5
Landline
Comcast IP Phone, LLC
2016/04/20
(240) 815-6
Landline
Comcast IP Phone, LLC
2016/08/03
(240) 815-7
Landline
Comcast IP Phone, LLC
2017/04/19
(240) 815-8
Wireless
Brightlink Communications, LLC
2016/03/04
(240) 815-9
Wireless
Omnipoint Communications Cap Operations, LLC
2017/07/07
Landline
Onvoy, LLC - MD
2016/04/26
(240) 831-0
Wireless
T-mobile USA, Inc.
2018/05/25
(240) 831-1
Wireless
Cellco Partnership DBA Verizon Wireless
2018/06/27
(240) 831-2
Wireless
T-mobile USA, Inc.
2018/06/07
(240) 831-3
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 831-4
Landline
Comcast IP Phone, LLC
2018/05/23
(240) 831-5
Landline
Onvoy, LLC - MD
2016/04/27
(240) 831-6
Landline
Onvoy, LLC - MD
2016/04/27
(240) 831-7
Landline
Onvoy, LLC - MD
2016/04/27
(240) 831-8
Landline
Onvoy, LLC - MD
2016/04/27
(240) 831-9
Wireless
Brightlink Communications, LLC
2018/06/25
Wireless
Onvoy Spectrum, LLC
2018/06/19
(240) 840-0
Wireless
Omnipoint Communications Cap Operations, LLC
2018/08/22
(240) 840-1
Wireless
New Cingular Wireless PCS, LLC
2018/09/13
(240) 840-2
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 840-3
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 840-4
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 840-5
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 840-6
Wireless
Omnipoint Communications Cap Operations, LLC
2018/09/24
(240) 840-7
Wireless
T-mobile USA, Inc.
2019/06/17
(240) 840-8
Wireless
Onvoy Spectrum, LLC
2018/06/20
(240) 840-9
Wireless
Brightlink Communications, LLC
2018/09/14
Landline
Onvoy, LLC - MD
2016/08/25
(240) 877-0
Landline
Onvoy, LLC - MD
2016/08/26
(240) 877-1
Landline
Onvoy, LLC - MD
2016/08/26
(240) 877-2
Landline
Onvoy, LLC - MD
2016/08/26
(240) 877-3
Wireless
T-mobile USA, Inc.
2017/02/10
(240) 877-4
Wireless
Cellco Partnership DBA Verizon Wireless
2017/06/29
(240) 877-5
Wireless
T-mobile USA, Inc.
2017/07/12
(240) 877-6
Wireless
T-mobile USA, Inc.
2017/09/08
(240) 877-7
Landline
Comcast IP Phone, LLC
2016/10/14
(240) 877-8
Wireless
Omnipoint Communications Cap Operations, LLC
2017/03/09
(240) 877-9
Wireless
Cellco Partnership DBA Verizon Wireless
2018/06/27
Prefix
Type
Location
Carrier
Assigned
Landline
Radiantiq LLC
2021/03/03
(240) 910-0
Wireless
Omnipoint Communications Cap Operations, LLC
2021/05/07
(240) 910-1
Wireless
New Cingular Wireless PCS, LLC
2021/06/21
(240) 910-2
Landline
Commio, LLC
2021/06/22
(240) 910-3
Landline
Commio, LLC
2021/06/22
(240) 910-4
Landline
Commio, LLC
2021/06/22
(240) 910-5
Wireless
Cellco Partnership DBA Verizon Wireless
2021/06/22
(240) 910-6
Wireless
Cellco Partnership DBA Verizon Wireless
2021/06/22
(240) 910-7
Wireless
Cellco Partnership DBA Verizon Wireless
2021/06/22
(240) 910-8
Wireless
Omnipoint Communications Cap Operations, LLC
2021/06/11
(240) 910-9
Landline
Radiantiq LLC
2021/03/04
Landline
Centurylink Communications LLC
2016/08/02
(240) 971-0
Landline
Telnyx LLC
2017/07/27
(240) 971-1
Wireless
Brightlink Communications, LLC
2018/09/14
(240) 971-2
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 971-3
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 971-4
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 971-5
Wireless
Brightlink Communications, LLC
2018/10/09
(240) 971-6
Wireless
T-mobile USA, Inc.
2018/03/23
(240) 971-7
Landline
Centurylink Communications LLC
2016/08/04
(240) 971-8
Wireless
Omnipoint Communications Cap Operations, LLC
2018/01/08
(240) 971-9
Wireless
Omnipoint Communications Cap Operations, LLC
2018/01/08
Prefix
Type
Location
Carrier
Assigned
Landline
Verizon Maryland, Inc.
-
(301) 228-0
Landline
Bandwidth.com CLEC, LLC - MD
2015/04/21
(301) 228-1
Landline
Verizon Maryland, Inc.
-
(301) 228-2
Landline
Verizon Maryland, Inc.
-
(301) 228-3
Landline
Verizon Maryland, Inc.
-
(301) 228-4
Landline
Verizon Maryland, Inc.
-
(301) 228-5
Landline
Verizon Maryland, Inc.
-
(301) 228-6
Landline
Verizon Maryland, Inc.
-
(301) 228-7
Landline
Verizon Maryland, Inc.
-
(301) 228-8
Landline
Verizon Maryland, Inc.
-
(301) 228-9
Landline
Comcast IP Phone, LLC
2017/11/29
Prefix
Type
Location
Carrier
Assigned
(301) 305
Wireless
Sprint Spectrum, L.P.
-
Landline
Verizon Maryland, Inc.
-
(301) 360-0
Landline
Verizon Maryland, Inc.
-
(301) 360-1
Landline
Verizon Maryland, Inc.
-
(301) 360-2
Landline
Verizon Maryland, Inc.
-
(301) 360-3
Landline
Verizon Maryland, Inc.
-
(301) 360-4
Landline
Verizon Maryland, Inc.
-
(301) 360-5
Landline
Comcast IP Phone, LLC
2016/01/25
(301) 360-6
Landline
Verizon Maryland, Inc.
-
(301) 360-7
Landline
Verizon Maryland, Inc.
-
(301) 360-8
Landline
Verizon Maryland, Inc.
-
(301) 360-9
Landline
Verizon Maryland, Inc.
-
Landline
Comcast IP Phone, LLC
2007/02/20
(301) 378-0
Landline
Comcast IP Phone, LLC
2007/02/22
(301) 378-1
Landline
Us Lec of Maryland, Inc.
2011/02/22
(301) 378-2
Landline
Comcast IP Phone, LLC
2009/07/14
(301) 378-3
Wireless
Sprint Spectrum, L.P.
2011/06/27
(301) 378-4
Wireless
Sprint Spectrum, L.P.
2011/06/27
(301) 378-5
Wireless
Sprint Spectrum, L.P.
2011/06/27
(301) 378-6
Wireless
Sprint Spectrum, L.P.
2011/06/27
(301) 378-7
Landline
Teleport Communications America - ID - LLC
2012/08/01
(301) 378-8
Landline
Comcast IP Phone, LLC
2012/10/05
(301) 378-9
Landline
Comcast IP Phone, LLC
2013/04/18
Prefix
Type
Location
Carrier
Assigned
(301) 401
Wireless
New Cingular Wireless PCS, LLC
-
Landline
Verizon Maryland, Inc.
2002/11/20
(301) 418-0
Wireless
Sprint Spectrum, L.P.
2003/09/17
(301) 418-1
Wireless
Sprint Spectrum, L.P.
2003/09/17
(301) 418-2
Wireless
Sprint Spectrum, L.P.
2003/09/17
(301) 418-3
Wireless
Sprint Spectrum, L.P.
2004/01/08
(301) 418-4
Wireless
Sprint Spectrum, L.P.
2004/01/08
(301) 418-5
Wireless
Sprint Spectrum, L.P.
2004/05/12
(301) 418-6
Landline
Fibernet, LLC - WV
2004/03/26
(301) 418-7
Landline
Verizon Maryland, Inc.
2004/07/06
(301) 418-8
Wireless
Sprint Spectrum, L.P.
2004/08/18
(301) 418-9
Landline
Verizon Maryland, Inc.
2002/11/22
(301) 471
Wireless
Cellco Partnership DBA Verizon Wireless
-
Landline
Verizon Maryland, Inc.
-
(301) 473-0
Wireless
Sprint Spectrum, L.P.
2007/12/03
(301) 473-1
Wireless
Sprint Spectrum, L.P.
2007/12/03
(301) 473-2
Wireless
New Cingular Wireless PCS, LLC
2007/01/08
(301) 473-3
Wireless
New Cingular Wireless PCS, LLC
2007/01/08
(301) 473-4
Landline
Verizon Maryland, Inc.
-
(301) 473-5
Landline
Verizon Maryland, Inc.
-
(301) 473-6
Wireless
Sprint Spectrum, L.P.
2007/12/03
(301) 473-7
Landline
Verizon Maryland, Inc.
-
(301) 473-8
Landline
Verizon Maryland, Inc.
-
(301) 473-9
Landline
Verizon Maryland, Inc.
-
Prefix
Type
Location
Carrier
Assigned
(301) 514
Wireless
Cellco Partnership DBA Verizon Wireless
-
(301) 524
Wireless
Sprint Spectrum, L.P.
-
Prefix
Type
Location
Carrier
Assigned
Landline
Verizon Maryland, Inc.
2006/07/06
(301) 600-0
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-1
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-2
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-3
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-4
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-5
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-6
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-7
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-8
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 600-9
Landline
Verizon Maryland, Inc.
2006/07/07
(301) 606
Wireless
Cellco Partnership DBA Verizon Wireless
-
(301) 619
Landline
Verizon Maryland, Inc.
-
(301) 620
Landline
Verizon Maryland, Inc.
-
Landline
Verizon Maryland, Inc.
-
(301) 624-0
Wireless
T-mobile USA, Inc.
2019/08/06
(301) 624-1
Landline
Verizon Maryland, Inc.
-
(301) 624-2
Landline
Verizon Maryland, Inc.
-
(301) 624-3
Wireless
Omnipoint Communications Cap Operations, LLC
2014/11/13
(301) 624-4
Landline
Verizon Maryland, Inc.
-
(301) 624-5
Landline
Verizon Maryland, Inc.
-
(301) 624-6
Landline
Verizon Maryland, Inc.
-
(301) 624-7
Landline
Verizon Maryland, Inc.
-
(301) 624-8
Landline
Verizon Maryland, Inc.
-
(301) 624-9
Wireless
Omnipoint Communications Cap Operations, LLC
2014/11/13
Landline
Verizon Maryland, Inc.
-
(301) 631-0
Landline
Verizon Maryland, Inc.
-
(301) 631-1
Landline
Verizon Maryland, Inc.
-
(301) 631-2
Landline
Verizon Maryland, Inc.
-
(301) 631-3
Landline
Verizon Maryland, Inc.
-
(301) 631-4
Wireless
Omnipoint Communications Cap Operations, LLC
2015/10/28
(301) 631-5
Landline
Verizon Maryland, Inc.
-
(301) 631-6
Landline
Verizon Maryland, Inc.
-
(301) 631-7
Landline
Verizon Maryland, Inc.
-
(301) 631-8
Landline
Verizon Maryland, Inc.
-
(301) 631-9
Landline
Verizon Maryland, Inc.
-
(301) 639
Wireless
Cellco Partnership DBA Verizon Wireless
-
Landline
Verizon Maryland, Inc.
-
(301) 644-0
Wireless
Brightlink Communications, LLC
2018/10/09
(301) 644-1
Landline
Verizon Maryland, Inc.
-
(301) 644-2
Landline
Verizon Maryland, Inc.
-
(301) 644-3
Landline
Verizon Maryland, Inc.
-
(301) 644-4
Landline
Verizon Maryland, Inc.
-
(301) 644-5
Landline
Verizon Maryland, Inc.
-
(301) 644-6
Landline
Verizon Maryland, Inc.
-
(301) 644-7
Landline
Verizon Maryland, Inc.
-
(301) 644-8
Landline
Verizon Maryland, Inc.
-
(301) 644-9
Landline
Verizon Maryland, Inc.
-
(301) 662
Landline
Verizon Maryland, Inc.
-
(301) 663
Landline
Verizon Maryland, Inc.
-
(301) 668
Landline
Verizon Maryland, Inc.
-
(301) 673
Landline
New Frontiers Telecommunications, Inc.
-
(301) 676
Wireless
New Cingular Wireless PCS, LLC
-
Landline
Verizon Maryland, Inc.
-
(301) 682-0
Landline
Verizon Maryland, Inc.
-
(301) 682-1
Wireless
Omnipoint Communications Cap Operations, LLC
2015/10/28
(301) 682-2
Landline
Comcast IP Phone, LLC
2015/02/17
(301) 682-3
Landline
Verizon Maryland, Inc.
-
(301) 682-4
Landline
Verizon Maryland, Inc.
-
(301) 682-5
Landline
Verizon Maryland, Inc.
-
(301) 682-6
Landline
Verizon Maryland, Inc.
-
(301) 682-7
Landline
Verizon Maryland, Inc.
-
(301) 682-8
Landline
Verizon Maryland, Inc.
-
(301) 682-9
Landline
Verizon Maryland, Inc.
-
(301) 693
Wireless
Omnipoint Communications Cap Operations, LLC
-
(301) 694
Landline
Verizon Maryland, Inc.
-
(301) 695
Landline
Verizon Maryland, Inc.
-
(301) 696
Landline
Verizon Maryland, Inc.
-
(301) 698
Landline
Verizon Maryland, Inc.
-
Prefix
Type
Location
Carrier
Assigned
Landline
Mcimetro Access Transmission Services LLC
-
(301) 712-0
Wireless
Sprint Spectrum, L.P.
2004/09/08
(301) 712-1
Wireless
Sprint Spectrum, L.P.
2004/09/08
(301) 712-2
Wireless
Sprint Spectrum, L.P.
2005/01/12
(301) 712-3
Wireless
Sprint Spectrum, L.P.
2005/11/11
(301) 712-4
Wireless
Sprint Spectrum, L.P.
2006/01/24
(301) 712-5
Wireless
Cellco Partnership DBA Verizon Wireless
2006/04/06
(301) 712-6
Wireless
Cellco Partnership DBA Verizon Wireless
2006/04/06
(301) 712-7
Wireless
Cellco Partnership DBA Verizon Wireless
2006/04/06
(301) 712-8
Wireless
Cellco Partnership DBA Verizon Wireless
2006/04/06
(301) 712-9
Landline
Mcimetro Access Transmission Services LLC
2004/07/30
Wireless
T-mobile USA, Inc.
-
(301) 732-0
Wireless
T-mobile USA, Inc.
2014/11/07
(301) 732-1
Wireless
T-mobile USA, Inc.
2013/05/21
(301) 732-2
Wireless
T-mobile USA, Inc.
2013/07/02
(301) 732-3
Wireless
T-mobile USA, Inc.
2014/12/05
(301) 732-4
Landline
Comcast IP Phone, LLC
2015/06/23
(301) 732-5
Landline
Comcast IP Phone, LLC
2011/11/04
(301) 732-6
Landline
Comcast IP Phone, LLC
2013/09/06
(301) 732-7
Landline
Bandwidth.com CLEC, LLC - MD
2015/04/21
(301) 732-8
Landline
Mcimetro Access Transmission Services LLC
2015/07/09
(301) 732-9
Wireless
Omnipoint Communications Cap Operations, LLC
2014/09/10
(301) 748
Wireless
Sprint Spectrum, L.P.
-
(301) 788
Wireless
Cellco Partnership DBA Verizon Wireless
-
Prefix
Type
Location
Carrier
Assigned
(301) 815
Landline
Verizon Maryland, Inc.
-
Landline
Vonage America LLC
2018/11/27
(301) 835-0
Landline
Vonage America LLC
2018/11/28
(301) 835-1
Landline
Onvoy, LLC - MD
2020/10/09
(301) 835-2
Landline
Onvoy, LLC - MD
2020/10/09
(301) 835-3
Wireless
T-mobile USA, Inc.
2019/11/05
(301) 835-4
Landline
Mcimetro Access Transmission Services LLC
2019/09/03
(301) 835-5
Wireless
New Cingular Wireless PCS, LLC
2019/03/01
(301) 835-6
Landline
Teleport Communications America - ID - LLC
2019/03/13
(301) 835-7
Landline
Comcast IP Phone, LLC
2019/03/01
(301) 835-8
Wireless
Omnipoint Communications Cap Operations, LLC
2018/12/20
(301) 835-9
Wireless
Cellco Partnership DBA Verizon Wireless
2019/09/12
Landline
Verizon Maryland, Inc.
-
(301) 846-0
Landline
Verizon Maryland, Inc.
-
(301) 846-1
Landline
Verizon Maryland, Inc.
-
(301) 846-2
Landline
Verizon Maryland, Inc.
-
(301) 846-3
Landline
Verizon Maryland, Inc.
-
(301) 846-4
Landline
Verizon Maryland, Inc.
-
(301) 846-5
Landline
Verizon Maryland, Inc.
-
(301) 846-6
Landline
Verizon Maryland, Inc.
-
(301) 846-7
Landline
Verizon Maryland, Inc.
-
(301) 846-8
Wireless
Cellco Partnership DBA Verizon Wireless
2015/08/07
(301) 846-9
Landline
Verizon Maryland, Inc.
-
Landline
Verizon Maryland, Inc.
-
(301) 898-0
Landline
Verizon Maryland, Inc.
-
(301) 898-1
Landline
Verizon Maryland, Inc.
-
(301) 898-2
Landline
Comcast IP Phone, LLC
2008/08/08
(301) 898-3
Landline
Verizon Maryland, Inc.
-
(301) 898-4
Landline
Verizon Maryland, Inc.
-
(301) 898-5
Landline
Verizon Maryland, Inc.
-
(301) 898-6
Wireless
T-mobile USA, Inc.
2015/12/03
(301) 898-7
Landline
Verizon Maryland, Inc.
-
(301) 898-8
Landline
Verizon Maryland, Inc.
-
(301) 898-9
Landline
Verizon Maryland, Inc.
-

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