The IP address 137.223.231 is provided by SURFnet, it's belong to the CDIR (Classless Inter-Domain Routing) 137.224.0.0/16 (range 137.224.0.0 to 137.224.255.255). The autonomous system number (ASN) is 1103.
| ASN | 1103 | 
| IP starting by | 137.224.0.0 | 
| IP ending by | 137.224.255.255 | 
| ASN Name | SURFnet | 
| CDIR | 137.224.0.0/16 | 
| Numerical IP | |
| Registry | ripencc | 
| Last update | 21/03/2020 | 

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | NL | Netherlands | - | Amsterdam | 52.374 | 4.8897 | 2020-03-21 | 
| MaxMind | NL | Netherlands | - | Wageningen | 51.9733 | 5.6676 | 2020-03-21 | 
| Whois | NL | - | - | - | 5 | 52 | |
| W3C | - | - | - | - | - | - | - |