IP / ASN / Domain Lookup
IP Lookup Result
IP Address
128.103.21.6
Location
United States,Massachusetts,Cambridge
ASN
Company
ENT
Harvard University
Longitude
-71.3919
-71.3919
Latitude
42.4855
42.4855
Native IP
Residential
24%Risk Score
24% Risk Score
IP Address (Decimal)
2154239238
Latency
US
-
HK
-
CA
-
GB
-
DE
-
AU
-
ASN History
ASN History | Network | AS Organization | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 128.103.0.0/16 | ENT Harvard University | United States | 📅 2017-01-01 08:38 | 📅 2025-10-20 00:47 | |
| 128.0.0.0/8 | ISP Teledom LLC | Russia | 📅 2017-05-04 07:14 | 📅 2017-05-04 14:42 | |
| 128.103.21.0/24 | ENT Harvard University | United States | 📅 2003-01-31 17:50 | 📅 2003-09-12 23:14 | |
| 128.103.0.0/16 | ISP Vodafone Americas | United States | 📅 2002-11-21 20:46 | 📅 2002-11-26 06:21 | |
| 128.103.0.0/16 | ISP Availo Networks AB | Sweden | 📅 2002-04-10 02:10 | 📅 2002-04-17 13:12 |
Company History
Company History | Network | First Seen | Last Seen |
|---|---|---|---|
ENT NET128 | 128.0.0.0/8 | 📅 1993-05-01 08:00 | 📅 2025-11-04 07:44 |
ENT NON-RIPE-NCC-MANAGED-ADDRESS-BLOCK | 128.99.0.0/11 | 📅 2019-01-07 18:48 | 📅 2025-11-04 07:44 |
ISP HARVARD-UNIV | 128.103.0.0/16 | 📅 1986-01-29 08:00 | 📅 2025-11-03 16:54 |
Registration History
Status | Network | Registry | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 128.0.0.0/8 |  ARIN | -- | 📅 1993-05-01 08:00 | 📅 2025-11-04 07:44 | |
| 128.99.0.0/11 |  RIPE | European Union | 📅 2019-01-07 18:48 | 📅 2025-11-04 07:44 | |
| 128.103.0.0/16 | ARIN | -- | 📅 1986-01-29 08:00 | 📅 2025-11-03 16:54 |
