The IP address 121.153.187 is provided by Korea Telecom, it's belong to the CDIR (Classless Inter-Domain Routing) 121.152.0.0/13 (range 121.152.0.0 to 121.159.255.255). The autonomous system number (ASN) is 4766.
| ASN | 4766 |
| IP starting by | 121.152.0.0 |
| IP ending by | 121.159.255.255 |
| ASN Name | Korea Telecom |
| CDIR | 121.152.0.0/13 |
| Numerical IP | |
| Registry | apnic |
| Last update | 05/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | KR | South Korea | - | Seoul | 37.5683 | 126.9778 | 2017-07-05 |
| MaxMind | KR | South Korea | - | Hwaseong-si | 37.2068 | 126.8169 | 2017-07-05 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |