IP / ASN / Domain Lookup
IP Lookup Result
IP Address
129.19.154.0
Location
United States,Colorado,Boulder
ASN
Company
ISP
Boulder Public Library District
Longitude
-105.3577
-105.3577
Latitude
40.0924
40.0924
Native IP
DataCenter
25%Risk Score
25% Risk Score
IP Address (Decimal)
2165545472
Latency
US
-
HK
-
CA
-
GB
-
DE
-
AU
-
ASN History
ASN History | Network | AS Organization | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 129.19.0.0/16 | ENT University Corporation for Atmospheric Research | United States | 📅 2025-11-02 16:35 | 📅 2025-11-03 16:42 | |
| 129.19.154.0/24 | ISP Boulder Public Library District | United States | 📅 2025-01-03 20:13 | 📅 2025-10-20 11:55 | |
| 129.19.154.0/24 | ENT University Corporation for Atmospheric Research | United States | 📅 2017-10-10 06:46 | 📅 2017-10-10 07:39 | |
| 129.19.0.0/16 | ISP Colorado State University | United States | 📅 2003-02-19 04:28 | 📅 2003-10-12 17:17 |
Company History
Company History | Network | First Seen | Last Seen |
|---|---|---|---|
ENT NET129 | 129.0.0.0/8 | 📅 1993-05-01 08:00 | 📅 2025-11-03 17:44 |
ENT WESTNET | 129.19.0.0/16 | 📅 1987-07-08 09:00 | 📅 2025-11-03 16:42 |
ISP FRGP-PARTICIPANT-ASSIGNMENTS-01 | 129.19.128.0/18 | 📅 2022-11-16 08:00 | 📅 2025-11-03 16:42 |
ISP WESTNET-BPLD-01 | 129.19.154.0/24 | 📅 2024-08-29 08:00 | 📅 2025-10-20 11:55 |
Registration History
Status | Network | Registry | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 129.0.0.0/8 |  ARIN | -- | 📅 1993-05-01 08:00 | 📅 2025-11-03 17:44 | |
| 129.19.0.0/16 | ARIN | -- | 📅 1987-07-08 09:00 | 📅 2025-11-03 16:42 | |
| 129.19.128.0/18 | ARIN | -- | 📅 2022-11-16 08:00 | 📅 2025-11-03 16:42 | |
| 129.19.154.0/24 | ARIN | -- | 📅 2024-08-29 08:00 | 📅 2025-10-20 11:55 |
