The IP address 121.153.3 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 | 04/12/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | KR | South Korea | - | Taiden | 36.3214 | 127.4197 | 2017-12-04 |
| MaxMind | KR | South Korea | - | - | 37.5112 | 126.9741 | 2017-12-04 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.153.3.0 | 2040070912 | 0 |
| 121.153.3.1 | 2040070913 | 0 |
| 121.153.3.2 | 2040070914 | 0 |
| 121.153.3.3 | 2040070915 | 0 |
| 121.153.3.4 | 2040070916 | 0 |
| 121.153.3.5 | 2040070917 | 0 |
| 121.153.3.6 | 2040070918 | 0 |
| 121.153.3.7 | 2040070919 | 0 |
| 121.153.3.8 | 2040070920 | 0 |
| 121.153.3.9 | 2040070921 | 0 |
| 121.153.3.10 | 2040070922 | 0 |
| 121.153.3.11 | 2040070923 | 0 |
| 121.153.3.12 | 2040070924 | 0 |
| 121.153.3.13 | 2040070925 | 0 |
| 121.153.3.14 | 2040070926 | 0 |
| 121.153.3.15 | 2040070927 | 0 |
| 121.153.3.16 | 2040070928 | 0 |
| 121.153.3.17 | 2040070929 | 0 |
| 121.153.3.18 | 2040070930 | 0 |
| 121.153.3.19 | 2040070931 | 0 |
| 121.153.3.20 | 2040070932 | 0 |
| 121.153.3.21 | 2040070933 | 0 |
| 121.153.3.22 | 2040070934 | 0 |
| 121.153.3.23 | 2040070935 | 0 |
| 121.153.3.24 | 2040070936 | 0 |
| 121.153.3.25 | 2040070937 | 0 |
| 121.153.3.26 | 2040070938 | 0 |
| 121.153.3.27 | 2040070939 | 0 |
| 121.153.3.28 | 2040070940 | 0 |
| 121.153.3.29 | 2040070941 | 0 |
| 121.153.3.30 | 2040070942 | 0 |
| 121.153.3.31 | 2040070943 | 0 |
| 121.153.3.32 | 2040070944 | 0 |
| 121.153.3.33 | 2040070945 | 0 |
| 121.153.3.34 | 2040070946 | 0 |
| 121.153.3.35 | 2040070947 | 0 |
| 121.153.3.36 | 2040070948 | 0 |
| 121.153.3.37 | 2040070949 | 0 |
| 121.153.3.38 | 2040070950 | 0 |
| 121.153.3.39 | 2040070951 | 0 |
| 121.153.3.40 | 2040070952 | 0 |
| 121.153.3.41 | 2040070953 | 0 |
| 121.153.3.42 | 2040070954 | 0 |
| 121.153.3.43 | 2040070955 | 0 |
| 121.153.3.44 | 2040070956 | 0 |
| 121.153.3.45 | 2040070957 | 0 |
| 121.153.3.46 | 2040070958 | 0 |
| 121.153.3.47 | 2040070959 | 0 |
| 121.153.3.48 | 2040070960 | 0 |
| 121.153.3.49 | 2040070961 | 0 |
| 121.153.3.50 | 2040070962 | 0 |
| 121.153.3.51 | 2040070963 | 0 |
| 121.153.3.52 | 2040070964 | 0 |
| 121.153.3.53 | 2040070965 | 0 |
| 121.153.3.54 | 2040070966 | 0 |
| 121.153.3.55 | 2040070967 | 0 |
| 121.153.3.56 | 2040070968 | 0 |
| 121.153.3.57 | 2040070969 | 0 |
| 121.153.3.58 | 2040070970 | 0 |
| 121.153.3.59 | 2040070971 | 0 |
| 121.153.3.60 | 2040070972 | 0 |
| 121.153.3.61 | 2040070973 | 0 |
| 121.153.3.62 | 2040070974 | 0 |
| 121.153.3.63 | 2040070975 | 0 |
| 121.153.3.64 | 2040070976 | 0 |
| 121.153.3.65 | 2040070977 | 0 |
| 121.153.3.66 | 2040070978 | 0 |
| 121.153.3.67 | 2040070979 | 0 |
| 121.153.3.68 | 2040070980 | 0 |
| 121.153.3.69 | 2040070981 | 0 |
| 121.153.3.70 | 2040070982 | 0 |
| 121.153.3.71 | 2040070983 | 0 |
| 121.153.3.72 | 2040070984 | 0 |
| 121.153.3.73 | 2040070985 | 0 |
| 121.153.3.74 | 2040070986 | 0 |
| 121.153.3.75 | 2040070987 | 0 |
| 121.153.3.76 | 2040070988 | 0 |
| 121.153.3.77 | 2040070989 | 0 |
| 121.153.3.78 | 2040070990 | 0 |
| 121.153.3.79 | 2040070991 | 0 |
| 121.153.3.80 | 2040070992 | 0 |
| 121.153.3.81 | 2040070993 | 0 |
| 121.153.3.82 | 2040070994 | 0 |
| 121.153.3.83 | 2040070995 | 0 |
| 121.153.3.84 | 2040070996 | 0 |
| 121.153.3.85 | 2040070997 | 0 |