The IP address 143.121.106 is provided by SURFnet, it's belong to the CDIR (Classless Inter-Domain Routing) 143.121.0.0/16 (range 143.121.0.0 to 143.121.255.255). The autonomous system number (ASN) is 1103.
| ASN | 1103 |
| IP starting by | 143.121.0.0 |
| IP ending by | 143.121.255.255 |
| ASN Name | SURFnet |
| CDIR | 143.121.0.0/16 |
| Numerical IP | |
| Registry | ripencc |
| Last update | 25/05/2020 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Saint Paul | 44.9291 | -93.0476 | 2020-05-24 |
| MaxMind | NL | Netherlands | - | Utrecht | 52.0938 | 5.1191 | 2020-05-24 |
| Whois | NL | - | - | - | 5 | 52 | |
| W3C | - | - | - | - | - | - | - |