The IP address 123.255.100 is provided by AS-CUHKNET CONVERTED TO ASN-CUHKNET FOR RPSL COMPLIANCE The Chinese University of Hong Kong, it's belong to the CDIR (Classless Inter-Domain Routing) 123.255.96.0/19 (range 123.255.96.0 to 123.255.127.255). The autonomous system number (ASN) is 4641.
| ASN | 4641 | 
| IP starting by | 123.255.96.0 | 
| IP ending by | 123.255.127.255 | 
| ASN Name | AS-CUHKNET CONVERTED TO ASN-CUHKNET FOR RPSL COMPLIANCE The Chinese University of Hong Kong | 
| CDIR | 123.255.96.0/19 | 
| Numerical IP | |
| Registry | apnic | 
| Last update | 09/08/2017 | 

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | HK | Hong Kong | - | Hong Kong | 22.2855 | 114.1577 | 2017-08-09 | 
| MaxMind | HK | Hong Kong | - | Central District | 22.291 | 114.15 | 2017-08-09 | 
| Whois | HK | - | - | - | 114 | 22 | |
| W3C | - | - | - | - | - | - | - |