IP / ASN / Domain Lookup
IP Lookup Result
IP Address
121.251.240.1
Location
China,Jiangsu,Nanjing
ASN
Company
ISP
China University of Petroleum (East China)
Longitude
118.8729
118.8729
Latitude
31.9657
31.9657
Roaming IP
Residential
21%Risk Score
21% Risk Score
IP Address (Decimal)
2046554113
Latency
US
-
HK
-
CA
-
GB
-
DE
-
AU
-
ASN History
ASN History | Network | AS Organization | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 121.248.0.0/14 | EDU CERNET-CN | China | 📅 2010-01-14 22:22 | 📅 2026-01-05 16:01 | |
| 121.250.0.0/15 | EDU CERNET-CN | China | 📅 2017-01-01 08:39 | 📅 2026-01-02 14:28 | |
| 121.251.240.0/20 | EDU China University of Petroleum (East China) | China | 📅 2020-01-05 00:12 | 📅 2025-12-24 23:24 | |
| 121.251.240.0/20 | EDU CERNET-CN | China | 📅 2012-01-25 23:19 | 📅 2025-12-24 23:24 | |
| 121.251.240.0/20 | EDU China Education and Research Network (CERNET) | China | 📅 2021-01-07 16:02 | 📅 2025-02-17 05:44 | |
| 121.248.0.0/14 | IDC Flat C, 16/F, Skyline Tower, | Hong Kong SAR China | 📅 2018-02-28 17:04 | 📅 2018-03-06 15:18 | |
| 121.0.0.0/8 | GOV RIPE NCC ASN block | -- | 📅 2010-02-18 12:59 | 📅 2010-02-18 13:01 | |
| 121.0.0.0/8 | ISP PTCL | Pakistan | 📅 2007-02-13 19:59 | 📅 2007-02-14 14:24 | |
| 121.0.0.0/8 | ISP ip telecom | Italy | 📅 2006-11-09 17:59 | 📅 2006-11-09 18:08 | |
| 121.128.0.0/9 | ISP Verizon Business | United States | 📅 2006-05-02 02:38 | 📅 2006-06-20 13:21 | |
| 121.0.0.0/8 | ENT Abitcool(China) Inc. | China | 📅 2005-08-31 10:16 | 📅 2005-11-25 05:30 | |
| 121.0.0.0/8 | ISP MTN SA | South Africa | 📅 2003-12-09 13:07 | 📅 2005-08-11 17:45 | |
| 121.0.0.0/8 | ISP Kertinis valstybes telekomunikaciju centras | Lithuania | 📅 2005-06-09 20:39 | 📅 2005-06-09 21:21 | |
| 121.0.0.0/8 | -- | 📅 2004-06-18 04:47 | 📅 2004-12-14 19:49 | ||
| 121.0.0.0/8 | ISP TDCSONG | Sweden | 📅 2004-05-07 19:39 | 📅 2004-05-26 13:58 | |
| 121.0.0.0/8 | IDC Level 3 Parent, LLC | United States | 📅 2004-03-25 22:55 | 📅 2004-03-26 01:41 | |
| 121.0.0.0/8 | ISP Harbor Communications | United States | 📅 2003-03-03 02:55 | 📅 2003-03-03 03:44 |
Company History
Company History | Network | First Seen | Last Seen |
|---|---|---|---|
EDU China University of Petroleum (East China) | 121.251.240.0/20 | 📅 2020-01-05 00:12 | 📅 2025-12-24 23:24 |
EDU CERNET-CN | 121.251.240.0/20 | 📅 2012-01-25 23:19 | 📅 2025-12-24 23:24 |
EDU CERNET-CN | 121.250.0.0/15 | 📅 2017-01-01 08:39 | 📅 2026-01-02 14:28 |
EDU CERNET-CN | 121.248.0.0/14 | 📅 2010-01-14 22:22 | 📅 2026-01-05 16:01 |
EDU China Education and Research Network (CERNET) | 121.251.240.0/20 | 📅 2021-01-07 16:02 | 📅 2025-02-17 05:44 |
IDC Flat C, 16/F, Skyline Tower, | 121.248.0.0/14 | 📅 2018-02-28 17:04 | 📅 2018-03-06 15:18 |
ISP Verizon Business | 121.128.0.0/9 | 📅 2006-05-02 02:38 | 📅 2006-06-20 13:21 |
GOV RIPE NCC ASN block | 121.0.0.0/8 | 📅 2010-02-18 12:59 | 📅 2010-02-18 13:01 |
ISP PTCL | 121.0.0.0/8 | 📅 2007-02-13 19:59 | 📅 2007-02-14 14:24 |
ISP ip telecom | 121.0.0.0/8 | 📅 2006-11-09 17:59 | 📅 2006-11-09 18:08 |
ENT Abitcool(China) Inc. | 121.0.0.0/8 | 📅 2005-08-31 10:16 | 📅 2005-11-25 05:30 |
ISP MTN SA | 121.0.0.0/8 | 📅 2003-12-09 13:07 | 📅 2005-08-11 17:45 |
ISP Kertinis valstybes telekomunikaciju centras | 121.0.0.0/8 | 📅 2005-06-09 20:39 | 📅 2005-06-09 21:21 |
ENT | 121.0.0.0/8 | 📅 2004-06-18 04:47 | 📅 2004-12-14 19:49 |
ISP TDCSONG | 121.0.0.0/8 | 📅 2004-05-07 19:39 | 📅 2004-05-26 13:58 |
IDC Level 3 Parent, LLC | 121.0.0.0/8 | 📅 2004-03-25 22:55 | 📅 2004-03-26 01:41 |
ISP Harbor Communications | 121.0.0.0/8 | 📅 2003-03-03 02:55 | 📅 2003-03-03 03:44 |
Registration History
Status | Network | Registry | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 121.248.0.0/14 |  APNIC | China | 📅 2020-09-03 17:15 | 📅 2026-01-03 09:53 | |
| 121.127.64.0/8 |  RIPE | European Union | 📅 2022-12-08 23:20 | 📅 2026-01-05 07:56 | |
| 121.0.0.0/8 |  ARIN | -- | 📅 2006-01-06 08:00 | 📅 2026-01-05 07:50 |
