Les adresses IP débutant par 121.2.3 sont fournies par So-net Entertainment Corporation, elles appartiennent au CIDR (Classless Inter-Domain Routing) 121.2.0.0/15, le bloc IP comprant les adresses de 121.2.0.0 à 121.3.255.255). Le numéro de système autonome (ASN) est 2527.
| ASN | 2527 |
| IP commençant par | 121.2.0.0 |
| IP se terminant par | 121.3.255.255 |
| Nom ASN | So-net Entertainment Corporation |
| CDIR | 121.2.0.0/15 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 09/09/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | JP | Japon | - | Nagoya | 35,1815 | 136,9064 | 2017-10-25 |
| MaxMind | JP | Japon | - | Kasugai | 35,2333 | 136,9833 | 2017-10-25 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.2.3.0 | 2030174976 | 0 |
| 121.2.3.1 | 2030174977 | 0 |
| 121.2.3.2 | 2030174978 | 0 |
| 121.2.3.3 | 2030174979 | 0 |
| 121.2.3.4 | 2030174980 | 0 |
| 121.2.3.5 | 2030174981 | 0 |
| 121.2.3.6 | 2030174982 | 0 |
| 121.2.3.7 | 2030174983 | 0 |
| 121.2.3.8 | 2030174984 | 0 |
| 121.2.3.9 | 2030174985 | 0 |
| 121.2.3.10 | 2030174986 | 0 |
| 121.2.3.11 | 2030174987 | 0 |
| 121.2.3.12 | 2030174988 | 0 |
| 121.2.3.13 | 2030174989 | 0 |
| 121.2.3.14 | 2030174990 | 0 |
| 121.2.3.15 | 2030174991 | 0 |
| 121.2.3.16 | 2030174992 | 0 |
| 121.2.3.17 | 2030174993 | 0 |
| 121.2.3.18 | 2030174994 | 0 |
| 121.2.3.19 | 2030174995 | 0 |
| 121.2.3.20 | 2030174996 | 0 |
| 121.2.3.21 | 2030174997 | 0 |
| 121.2.3.22 | 2030174998 | 0 |
| 121.2.3.23 | 2030174999 | 0 |
| 121.2.3.24 | 2030175000 | 0 |
| 121.2.3.25 | 2030175001 | 0 |
| 121.2.3.26 | 2030175002 | 0 |
| 121.2.3.27 | 2030175003 | 0 |
| 121.2.3.28 | 2030175004 | 0 |
| 121.2.3.29 | 2030175005 | 0 |
| 121.2.3.30 | 2030175006 | 0 |
| 121.2.3.31 | 2030175007 | 0 |
| 121.2.3.32 | 2030175008 | 0 |
| 121.2.3.33 | 2030175009 | 0 |
| 121.2.3.34 | 2030175010 | 0 |
| 121.2.3.35 | 2030175011 | 0 |
| 121.2.3.36 | 2030175012 | 0 |
| 121.2.3.37 | 2030175013 | 0 |
| 121.2.3.38 | 2030175014 | 0 |
| 121.2.3.39 | 2030175015 | 0 |
| 121.2.3.40 | 2030175016 | 0 |
| 121.2.3.41 | 2030175017 | 0 |
| 121.2.3.42 | 2030175018 | 0 |
| 121.2.3.43 | 2030175019 | 0 |
| 121.2.3.44 | 2030175020 | 0 |
| 121.2.3.45 | 2030175021 | 0 |
| 121.2.3.46 | 2030175022 | 0 |
| 121.2.3.47 | 2030175023 | 0 |
| 121.2.3.48 | 2030175024 | 0 |
| 121.2.3.49 | 2030175025 | 0 |
| 121.2.3.50 | 2030175026 | 0 |
| 121.2.3.51 | 2030175027 | 0 |
| 121.2.3.52 | 2030175028 | 0 |
| 121.2.3.53 | 2030175029 | 0 |
| 121.2.3.54 | 2030175030 | 0 |
| 121.2.3.55 | 2030175031 | 0 |
| 121.2.3.56 | 2030175032 | 0 |
| 121.2.3.57 | 2030175033 | 0 |
| 121.2.3.58 | 2030175034 | 0 |
| 121.2.3.59 | 2030175035 | 0 |
| 121.2.3.60 | 2030175036 | 0 |
| 121.2.3.61 | 2030175037 | 0 |
| 121.2.3.62 | 2030175038 | 0 |
| 121.2.3.63 | 2030175039 | 0 |
| 121.2.3.64 | 2030175040 | 0 |
| 121.2.3.65 | 2030175041 | 0 |
| 121.2.3.66 | 2030175042 | 0 |
| 121.2.3.67 | 2030175043 | 0 |
| 121.2.3.68 | 2030175044 | 0 |
| 121.2.3.69 | 2030175045 | 0 |
| 121.2.3.70 | 2030175046 | 0 |
| 121.2.3.71 | 2030175047 | 0 |
| 121.2.3.72 | 2030175048 | 0 |
| 121.2.3.73 | 2030175049 | 0 |
| 121.2.3.74 | 2030175050 | 0 |
| 121.2.3.75 | 2030175051 | 0 |
| 121.2.3.76 | 2030175052 | 0 |
| 121.2.3.77 | 2030175053 | 0 |
| 121.2.3.78 | 2030175054 | 0 |
| 121.2.3.79 | 2030175055 | 0 |
| 121.2.3.80 | 2030175056 | 0 |
| 121.2.3.81 | 2030175057 | 0 |
| 121.2.3.82 | 2030175058 | 0 |
| 121.2.3.83 | 2030175059 | 0 |
| 121.2.3.84 | 2030175060 | 0 |
| 121.2.3.85 | 2030175061 | 0 |
| IP | Numerical IP | DNS |
| 121.2.3.86 | 2030175062 | 0 |
| 121.2.3.87 | 2030175063 | 0 |
| 121.2.3.88 | 2030175064 | 0 |
| 121.2.3.89 | 2030175065 | 0 |
| 121.2.3.90 | 2030175066 | 0 |
| 121.2.3.91 | 2030175067 | 0 |
| 121.2.3.92 | 2030175068 | 0 |
| 121.2.3.93 | 2030175069 | 0 |
| 121.2.3.94 | 2030175070 | 0 |
| 121.2.3.95 | 2030175071 | 0 |
| 121.2.3.96 | 2030175072 | 0 |
| 121.2.3.97 | 2030175073 | 0 |
| 121.2.3.98 | 2030175074 | 0 |
| 121.2.3.99 | 2030175075 | 0 |
| 121.2.3.100 | 2030175076 | 0 |
| 121.2.3.101 | 2030175077 | 0 |
| 121.2.3.102 | 2030175078 | 0 |
| 121.2.3.103 | 2030175079 | 0 |
| 121.2.3.104 | 2030175080 | 0 |
| 121.2.3.105 | 2030175081 | 0 |
| 121.2.3.106 | 2030175082 | 0 |
| 121.2.3.107 | 2030175083 | 0 |
| 121.2.3.108 | 2030175084 | 0 |
| 121.2.3.109 | 2030175085 | 0 |
| 121.2.3.110 | 2030175086 | 0 |
| 121.2.3.111 | 2030175087 | 0 |
| 121.2.3.112 | 2030175088 | 0 |
| 121.2.3.113 | 2030175089 | 0 |
| 121.2.3.114 | 2030175090 | 0 |
| 121.2.3.115 | 2030175091 | 0 |
| 121.2.3.116 | 2030175092 | 0 |
| 121.2.3.117 | 2030175093 | 0 |
| 121.2.3.118 | 2030175094 | 0 |
| 121.2.3.119 | 2030175095 | 0 |
| 121.2.3.120 | 2030175096 | 0 |
| 121.2.3.121 | 2030175097 | 0 |
| 121.2.3.122 | 2030175098 | 0 |
| 121.2.3.123 | 2030175099 | 0 |
| 121.2.3.124 | 2030175100 | 0 |
| 121.2.3.125 | 2030175101 | 0 |
| 121.2.3.126 | 2030175102 | 0 |
| 121.2.3.127 | 2030175103 | 0 |
| 121.2.3.128 | 2030175104 | 0 |
| 121.2.3.129 | 2030175105 | 0 |
| 121.2.3.130 | 2030175106 | 0 |
| 121.2.3.131 | 2030175107 | 0 |
| 121.2.3.132 | 2030175108 | 0 |
| 121.2.3.133 | 2030175109 | 0 |
| 121.2.3.134 | 2030175110 | 0 |
| 121.2.3.135 | 2030175111 | 0 |
| 121.2.3.136 | 2030175112 | 0 |
| 121.2.3.137 | 2030175113 | 0 |
| 121.2.3.138 | 2030175114 | 0 |
| 121.2.3.139 | 2030175115 | 0 |
| 121.2.3.140 | 2030175116 | 0 |
| 121.2.3.141 | 2030175117 | 0 |
| 121.2.3.142 | 2030175118 | 0 |
| 121.2.3.143 | 2030175119 | 0 |
| 121.2.3.144 | 2030175120 | 0 |
| 121.2.3.145 | 2030175121 | 0 |
| 121.2.3.146 | 2030175122 | 0 |
| 121.2.3.147 | 2030175123 | 0 |
| 121.2.3.148 | 2030175124 | 0 |
| 121.2.3.149 | 2030175125 | 0 |
| 121.2.3.150 | 2030175126 | 0 |
| 121.2.3.151 | 2030175127 | 0 |
| 121.2.3.152 | 2030175128 | 0 |
| 121.2.3.153 | 2030175129 | 0 |
| 121.2.3.154 | 2030175130 | 0 |
| 121.2.3.155 | 2030175131 | 0 |
| 121.2.3.156 | 2030175132 | 0 |
| 121.2.3.157 | 2030175133 | 0 |
| 121.2.3.158 | 2030175134 | 0 |
| 121.2.3.159 | 2030175135 | 0 |
| 121.2.3.160 | 2030175136 | 0 |
| 121.2.3.161 | 2030175137 | 0 |
| 121.2.3.162 | 2030175138 | 0 |
| 121.2.3.163 | 2030175139 | 0 |
| 121.2.3.164 | 2030175140 | 0 |
| 121.2.3.165 | 2030175141 | 0 |
| 121.2.3.166 | 2030175142 | 0 |
| 121.2.3.167 | 2030175143 | 0 |
| 121.2.3.168 | 2030175144 | 0 |
| 121.2.3.169 | 2030175145 | 0 |
| 121.2.3.170 | 2030175146 | 0 |
| 121.2.3.171 | 2030175147 | 0 |
| IP | Numerical IP | DNS |
| 121.2.3.172 | 2030175148 | 0 |
| 121.2.3.173 | 2030175149 | 0 |
| 121.2.3.174 | 2030175150 | 0 |
| 121.2.3.175 | 2030175151 | 0 |
| 121.2.3.176 | 2030175152 | 0 |
| 121.2.3.177 | 2030175153 | 0 |
| 121.2.3.178 | 2030175154 | 0 |
| 121.2.3.179 | 2030175155 | 0 |
| 121.2.3.180 | 2030175156 | 0 |
| 121.2.3.181 | 2030175157 | 0 |
| 121.2.3.182 | 2030175158 | 0 |
| 121.2.3.183 | 2030175159 | 0 |
| 121.2.3.184 | 2030175160 | 0 |
| 121.2.3.185 | 2030175161 | 0 |
| 121.2.3.186 | 2030175162 | 0 |
| 121.2.3.187 | 2030175163 | 0 |
| 121.2.3.188 | 2030175164 | 0 |
| 121.2.3.189 | 2030175165 | 0 |
| 121.2.3.190 | 2030175166 | 0 |
| 121.2.3.191 | 2030175167 | 0 |
| 121.2.3.192 | 2030175168 | 0 |
| 121.2.3.193 | 2030175169 | 0 |
| 121.2.3.194 | 2030175170 | 0 |
| 121.2.3.195 | 2030175171 | 0 |
| 121.2.3.196 | 2030175172 | 0 |
| 121.2.3.197 | 2030175173 | 0 |
| 121.2.3.198 | 2030175174 | 0 |
| 121.2.3.199 | 2030175175 | 0 |
| 121.2.3.200 | 2030175176 | 0 |
| 121.2.3.201 | 2030175177 | 0 |
| 121.2.3.202 | 2030175178 | 0 |
| 121.2.3.203 | 2030175179 | 0 |
| 121.2.3.204 | 2030175180 | 0 |
| 121.2.3.205 | 2030175181 | 0 |
| 121.2.3.206 | 2030175182 | 0 |
| 121.2.3.207 | 2030175183 | 0 |
| 121.2.3.208 | 2030175184 | 0 |
| 121.2.3.209 | 2030175185 | 0 |
| 121.2.3.210 | 2030175186 | 0 |
| 121.2.3.211 | 2030175187 | 0 |
| 121.2.3.212 | 2030175188 | 0 |
| 121.2.3.213 | 2030175189 | 0 |
| 121.2.3.214 | 2030175190 | 0 |
| 121.2.3.215 | 2030175191 | 0 |
| 121.2.3.216 | 2030175192 | 0 |
| 121.2.3.217 | 2030175193 | 0 |
| 121.2.3.218 | 2030175194 | 0 |
| 121.2.3.219 | 2030175195 | 0 |
| 121.2.3.220 | 2030175196 | 0 |
| 121.2.3.221 | 2030175197 | 0 |
| 121.2.3.222 | 2030175198 | 0 |
| 121.2.3.223 | 2030175199 | 0 |
| 121.2.3.224 | 2030175200 | 0 |
| 121.2.3.225 | 2030175201 | 0 |
| 121.2.3.226 | 2030175202 | 0 |
| 121.2.3.227 | 2030175203 | 0 |
| 121.2.3.228 | 2030175204 | 0 |
| 121.2.3.229 | 2030175205 | 0 |
| 121.2.3.230 | 2030175206 | 0 |
| 121.2.3.231 | 2030175207 | 0 |
| 121.2.3.232 | 2030175208 | 0 |
| 121.2.3.233 | 2030175209 | 0 |
| 121.2.3.234 | 2030175210 | 0 |
| 121.2.3.235 | 2030175211 | 0 |
| 121.2.3.236 | 2030175212 | 0 |
| 121.2.3.237 | 2030175213 | 0 |
| 121.2.3.238 | 2030175214 | 0 |
| 121.2.3.239 | 2030175215 | 0 |
| 121.2.3.240 | 2030175216 | 0 |
| 121.2.3.241 | 2030175217 | 0 |
| 121.2.3.242 | 2030175218 | 0 |
| 121.2.3.243 | 2030175219 | 0 |
| 121.2.3.244 | 2030175220 | 0 |
| 121.2.3.245 | 2030175221 | 0 |
| 121.2.3.246 | 2030175222 | 0 |
| 121.2.3.247 | 2030175223 | 0 |
| 121.2.3.248 | 2030175224 | 0 |
| 121.2.3.249 | 2030175225 | 0 |
| 121.2.3.250 | 2030175226 | 0 |
| 121.2.3.251 | 2030175227 | 0 |
| 121.2.3.252 | 2030175228 | 0 |
| 121.2.3.253 | 2030175229 | 0 |
| 121.2.3.254 | 2030175230 | 0 |
| 121.2.3.255 | 2030175231 | 0 |