The IP address 121.157.13 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 | apnic | 
| Last update | 30/07/2019 | 

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | KR | South Korea | - | Seongnam | 37.4386 | 127.1378 | 2019-07-29 | 
| MaxMind | KR | South Korea | - | Seoul | 37.5111 | 126.9743 | 2019-07-29 | 
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |