Die IP-Adresse 121.153.0 erfolgt über Korea Telecom, es hat gehören zu den GGDV (Classless Inter-Domain Routing) 121.128.0.0/11 (Bereich 121.128.0.0, 121.159.255.255). Die autonomen Systemnummer (ASN) ist 4766.
| ASN | 4766 |
| Ausgehend von IP | 121.128.0.0 |
| Beendigung durch IP | 121.159.255.255 |
| ASN-Namen | Korea Telecom |
| GGDV | 121.128.0.0/11 |
| Numerische IP | |
| Registrierung | apnic |
| Letztes update | 12.06.2019 |

| Vorwahl des Landes | Land | Region | Stadt | Breitengrad | Länge | Letztes update | |
| IP2Location | KR | Südkorea | - | Taejon | 36,4499 | 127,1333 | 2019-06-12 |
| MaxMind | KR | Südkorea | - | Yesan | 36,6776 | 126,8427 | 2019-06-12 |
| Whois | KR | - | - | - | 128 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.153.0.0 | 2040070144 | 0 |
| 121.153.0.1 | 2040070145 | 0 |
| 121.153.0.2 | 2040070146 | 0 |
| 121.153.0.3 | 2040070147 | 0 |
| 121.153.0.4 | 2040070148 | 0 |
| 121.153.0.5 | 2040070149 | 0 |
| 121.153.0.6 | 2040070150 | 0 |
| 121.153.0.7 | 2040070151 | 0 |
| 121.153.0.8 | 2040070152 | 0 |
| 121.153.0.9 | 2040070153 | 0 |
| 121.153.0.10 | 2040070154 | 0 |
| 121.153.0.11 | 2040070155 | 0 |
| 121.153.0.12 | 2040070156 | 0 |
| 121.153.0.13 | 2040070157 | 0 |
| 121.153.0.14 | 2040070158 | 0 |
| 121.153.0.15 | 2040070159 | 0 |
| 121.153.0.16 | 2040070160 | 0 |
| 121.153.0.17 | 2040070161 | 0 |
| 121.153.0.18 | 2040070162 | 0 |
| 121.153.0.19 | 2040070163 | 0 |
| 121.153.0.20 | 2040070164 | 0 |
| 121.153.0.21 | 2040070165 | 0 |
| 121.153.0.22 | 2040070166 | 0 |
| 121.153.0.23 | 2040070167 | 0 |
| 121.153.0.24 | 2040070168 | 0 |
| 121.153.0.25 | 2040070169 | 0 |
| 121.153.0.26 | 2040070170 | 0 |
| 121.153.0.27 | 2040070171 | 0 |
| 121.153.0.28 | 2040070172 | 0 |
| 121.153.0.29 | 2040070173 | 0 |
| 121.153.0.30 | 2040070174 | 0 |
| 121.153.0.31 | 2040070175 | 0 |
| 121.153.0.32 | 2040070176 | 0 |
| 121.153.0.33 | 2040070177 | 0 |
| 121.153.0.34 | 2040070178 | 0 |
| 121.153.0.35 | 2040070179 | 0 |
| 121.153.0.36 | 2040070180 | 0 |
| 121.153.0.37 | 2040070181 | 0 |
| 121.153.0.38 | 2040070182 | 0 |
| 121.153.0.39 | 2040070183 | 0 |
| 121.153.0.40 | 2040070184 | 0 |
| 121.153.0.41 | 2040070185 | 0 |
| 121.153.0.42 | 2040070186 | 0 |
| 121.153.0.43 | 2040070187 | 0 |
| 121.153.0.44 | 2040070188 | 0 |
| 121.153.0.45 | 2040070189 | 0 |
| 121.153.0.46 | 2040070190 | 0 |
| 121.153.0.47 | 2040070191 | 0 |
| 121.153.0.48 | 2040070192 | 0 |
| 121.153.0.49 | 2040070193 | 0 |
| 121.153.0.50 | 2040070194 | 0 |
| 121.153.0.51 | 2040070195 | 0 |
| 121.153.0.52 | 2040070196 | 0 |
| 121.153.0.53 | 2040070197 | 0 |
| 121.153.0.54 | 2040070198 | 0 |
| 121.153.0.55 | 2040070199 | 0 |
| 121.153.0.56 | 2040070200 | 0 |
| 121.153.0.57 | 2040070201 | 0 |
| 121.153.0.58 | 2040070202 | 0 |
| 121.153.0.59 | 2040070203 | 0 |
| 121.153.0.60 | 2040070204 | 0 |
| 121.153.0.61 | 2040070205 | 0 |
| 121.153.0.62 | 2040070206 | 0 |
| 121.153.0.63 | 2040070207 | 0 |
| 121.153.0.64 | 2040070208 | 0 |
| 121.153.0.65 | 2040070209 | 0 |
| 121.153.0.66 | 2040070210 | 0 |
| 121.153.0.67 | 2040070211 | 0 |
| 121.153.0.68 | 2040070212 | 0 |
| 121.153.0.69 | 2040070213 | 0 |
| 121.153.0.70 | 2040070214 | 0 |
| 121.153.0.71 | 2040070215 | 0 |
| 121.153.0.72 | 2040070216 | 0 |
| 121.153.0.73 | 2040070217 | 0 |
| 121.153.0.74 | 2040070218 | 0 |
| 121.153.0.75 | 2040070219 | 0 |
| 121.153.0.76 | 2040070220 | 0 |
| 121.153.0.77 | 2040070221 | 0 |
| 121.153.0.78 | 2040070222 | 0 |
| 121.153.0.79 | 2040070223 | 0 |
| 121.153.0.80 | 2040070224 | 0 |
| 121.153.0.81 | 2040070225 | 0 |
| 121.153.0.82 | 2040070226 | 0 |
| 121.153.0.83 | 2040070227 | 0 |
| 121.153.0.84 | 2040070228 | 0 |
| 121.153.0.85 | 2040070229 | 0 |