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ASN History
Network
AS Organization
Country
First Seen
Last Seen
121.37.0.0/20
ISPChina Unicom Shenzen network

China
2011-09-27 14:16
2011-09-27 17:26
121.37.0.0/20
IDC5F Greatwall Bldg., A38 Xueyuan Road Haidian District,Beijing

China
2008-12-31 09:09
2009-11-10 22:48
121.37.0.0/19
IDCHuawei Cloud(China)

China
2026-07-02 18:20
2026-08-18 23:37
121.37.0.0/18
IDCFlat C, 16/F, Skyline Tower,

Hong Kong SAR China
2018-01-10 15:43
2018-03-06 15:13
121.37.0.0/18
IDCIDC, China Telecommunications Corporation

China
2010-04-08 23:59
2010-04-09 00:02
121.37.0.0/18
ISPChina Telecom (Group)

China
2006-12-29 14:59
2007-04-19 10:21
121.37.0.0/17
IDCChina Telecom

China
2010-10-01 20:19
2018-12-26 05:00
121.37.0.0/17
IDCFlat C, 16/F, Skyline Tower,

Hong Kong SAR China
2018-02-28 17:04
2018-03-06 15:18
121.37.0.0/16
IDCFlat C, 16/F, Skyline Tower,

Hong Kong SAR China
2018-01-10 15:43
2018-03-06 15:13
121.0.0.0/9
ISPVerizon Business

United States
2006-05-02 02:38
2006-06-20 13:21
121.0.0.0/8
IDCRIPE NCC ASN block
/ --
2010-02-18 12:59
2010-02-18 13:01
121.0.0.0/8
IDCPTCL

Pakistan
2007-02-13 19:59
2007-02-14 14:24
121.0.0.0/8
ISPip telecom

Italy
2006-11-09 17:59
2006-11-09 18:08
121.0.0.0/8
IDCAbitcool(China) Inc.

China
2005-08-31 10:16
2005-11-25 05:30
121.0.0.0/8
ISPMTN SA

South Africa
2003-12-09 13:07
2005-08-11 17:45
121.0.0.0/8
IDCKertinis valstybes telekomunikaciju centras

Lithuania
2005-06-09 20:39
2005-06-09 21:21
121.0.0.0/8
IDC--
/ --
2004-06-18 04:47
2004-12-14 19:49
121.0.0.0/8
ISPTDCSONG

Sweden
2004-05-07 19:39
2004-05-26 13:58
121.0.0.0/8
IDCLevel 3 Parent, LLC

United States
2004-03-25 22:55
2004-03-26 01:41
121.0.0.0/8
ISPHarbor Communications

United States
2003-03-03 02:55
2003-03-03 03:44
Company History
Network
First Seen
Last Seen
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Registration History
Registry
Country
First Seen
Last Seen
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IP Location History
Location
Time
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