The IP address 121.136.191 is provided by Korea Telecom, it's belong to the CDIR (Classless Inter-Domain Routing) 121.128.0.0/11 (range 121.128.0.0 to 121.159.255.255). The autonomous system number (ASN) is 4766.
| ASN | 4766 | 
| IP starting by | 121.128.0.0 | 
| IP ending by | 121.159.255.255 | 
| ASN Name | Korea Telecom | 
| CDIR | 121.128.0.0/11 | 
| Numerical IP | |
| Registry | |
| Last update | 07/10/2017 | 

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | KR | South Korea | - | Seoul | 37.5683 | 126.9778 | 2019-05-09 | 
| MaxMind | KR | South Korea | - | Osan | 37.1522 | 127.0706 | 2019-05-09 | 
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |