Die IP-Adresse 121.166.3 erfolgt über Korea Telecom, es hat gehören zu den GGDV (Classless Inter-Domain Routing) 121.160.0.0/11 (Bereich 121.160.0.0, 121.191.255.255). Die autonomen Systemnummer (ASN) ist 4766.
| ASN | 4766 |
| Ausgehend von IP | 121.160.0.0 |
| Beendigung durch IP | 121.191.255.255 |
| ASN-Namen | Korea Telecom |
| GGDV | 121.160.0.0/11 |
| Numerische IP | |
| Registrierung | apnic |
| Letztes update | 13.04.2018 |

| Vorwahl des Landes | Land | Region | Stadt | Breitengrad | Länge | Letztes update | |
| IP2Location | KR | Südkorea | - | Suwon | 37,2667 | 127,0167 | 2018-04-13 |
| MaxMind | KR | Südkorea | - | - | 37,2342 | 127,2064 | 2018-04-13 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.166.3.0 | 2040922880 | 0 |
| 121.166.3.1 | 2040922881 | 0 |
| 121.166.3.2 | 2040922882 | 0 |
| 121.166.3.3 | 2040922883 | 0 |
| 121.166.3.4 | 2040922884 | 0 |
| 121.166.3.5 | 2040922885 | 0 |
| 121.166.3.6 | 2040922886 | 0 |
| 121.166.3.7 | 2040922887 | 0 |
| 121.166.3.8 | 2040922888 | 0 |
| 121.166.3.9 | 2040922889 | 0 |
| 121.166.3.10 | 2040922890 | 0 |
| 121.166.3.11 | 2040922891 | 0 |
| 121.166.3.12 | 2040922892 | 0 |
| 121.166.3.13 | 2040922893 | 0 |
| 121.166.3.14 | 2040922894 | 0 |
| 121.166.3.15 | 2040922895 | 0 |
| 121.166.3.16 | 2040922896 | 0 |
| 121.166.3.17 | 2040922897 | 0 |
| 121.166.3.18 | 2040922898 | 0 |
| 121.166.3.19 | 2040922899 | 0 |
| 121.166.3.20 | 2040922900 | 0 |
| 121.166.3.21 | 2040922901 | 0 |
| 121.166.3.22 | 2040922902 | 0 |
| 121.166.3.23 | 2040922903 | 0 |
| 121.166.3.24 | 2040922904 | 0 |
| 121.166.3.25 | 2040922905 | 0 |
| 121.166.3.26 | 2040922906 | 0 |
| 121.166.3.27 | 2040922907 | 0 |
| 121.166.3.28 | 2040922908 | 0 |
| 121.166.3.29 | 2040922909 | 0 |
| 121.166.3.30 | 2040922910 | 0 |
| 121.166.3.31 | 2040922911 | 0 |
| 121.166.3.32 | 2040922912 | 0 |
| 121.166.3.33 | 2040922913 | 0 |
| 121.166.3.34 | 2040922914 | 0 |
| 121.166.3.35 | 2040922915 | 0 |
| 121.166.3.36 | 2040922916 | 0 |
| 121.166.3.37 | 2040922917 | 0 |
| 121.166.3.38 | 2040922918 | 0 |
| 121.166.3.39 | 2040922919 | 0 |
| 121.166.3.40 | 2040922920 | 0 |
| 121.166.3.41 | 2040922921 | 0 |
| 121.166.3.42 | 2040922922 | 0 |
| 121.166.3.43 | 2040922923 | 0 |
| 121.166.3.44 | 2040922924 | 0 |
| 121.166.3.45 | 2040922925 | 0 |
| 121.166.3.46 | 2040922926 | 0 |
| 121.166.3.47 | 2040922927 | 0 |
| 121.166.3.48 | 2040922928 | 0 |
| 121.166.3.49 | 2040922929 | 0 |
| 121.166.3.50 | 2040922930 | 0 |
| 121.166.3.51 | 2040922931 | 0 |
| 121.166.3.52 | 2040922932 | 0 |
| 121.166.3.53 | 2040922933 | 0 |
| 121.166.3.54 | 2040922934 | 0 |
| 121.166.3.55 | 2040922935 | 0 |
| 121.166.3.56 | 2040922936 | 0 |
| 121.166.3.57 | 2040922937 | 0 |
| 121.166.3.58 | 2040922938 | 0 |
| 121.166.3.59 | 2040922939 | 0 |
| 121.166.3.60 | 2040922940 | 0 |
| 121.166.3.61 | 2040922941 | 0 |
| 121.166.3.62 | 2040922942 | 0 |
| 121.166.3.63 | 2040922943 | 0 |
| 121.166.3.64 | 2040922944 | 0 |
| 121.166.3.65 | 2040922945 | 0 |
| 121.166.3.66 | 2040922946 | 0 |
| 121.166.3.67 | 2040922947 | 0 |
| 121.166.3.68 | 2040922948 | 0 |
| 121.166.3.69 | 2040922949 | 0 |
| 121.166.3.70 | 2040922950 | 0 |
| 121.166.3.71 | 2040922951 | 0 |
| 121.166.3.72 | 2040922952 | 0 |
| 121.166.3.73 | 2040922953 | 0 |
| 121.166.3.74 | 2040922954 | 0 |
| 121.166.3.75 | 2040922955 | 0 |
| 121.166.3.76 | 2040922956 | 0 |
| 121.166.3.77 | 2040922957 | 0 |
| 121.166.3.78 | 2040922958 | 0 |
| 121.166.3.79 | 2040922959 | 0 |
| 121.166.3.80 | 2040922960 | 0 |
| 121.166.3.81 | 2040922961 | 0 |
| 121.166.3.82 | 2040922962 | 0 |
| 121.166.3.83 | 2040922963 | 0 |
| 121.166.3.84 | 2040922964 | 0 |
| 121.166.3.85 | 2040922965 | 0 |