Les adresses IP débutant par 121.3.185 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 | 03/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | JP | Japon | - | Yokohama | 35,4442 | 139,6381 | 2017-08-03 |
| MaxMind | JP | Japon | - | Miyazaki | 31,9111 | 131,4239 | 2017-08-03 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.3.185.0 | 2030287104 | 0 |
| 121.3.185.1 | 2030287105 | 0 |
| 121.3.185.2 | 2030287106 | 0 |
| 121.3.185.3 | 2030287107 | 0 |
| 121.3.185.4 | 2030287108 | 0 |
| 121.3.185.5 | 2030287109 | 0 |
| 121.3.185.6 | 2030287110 | 0 |
| 121.3.185.7 | 2030287111 | 0 |
| 121.3.185.8 | 2030287112 | 0 |
| 121.3.185.9 | 2030287113 | 0 |
| 121.3.185.10 | 2030287114 | 0 |
| 121.3.185.11 | 2030287115 | 0 |
| 121.3.185.12 | 2030287116 | 0 |
| 121.3.185.13 | 2030287117 | 0 |
| 121.3.185.14 | 2030287118 | 0 |
| 121.3.185.15 | 2030287119 | 0 |
| 121.3.185.16 | 2030287120 | 0 |
| 121.3.185.17 | 2030287121 | 0 |
| 121.3.185.18 | 2030287122 | 0 |
| 121.3.185.19 | 2030287123 | 0 |
| 121.3.185.20 | 2030287124 | 0 |
| 121.3.185.21 | 2030287125 | 0 |
| 121.3.185.22 | 2030287126 | 0 |
| 121.3.185.23 | 2030287127 | 0 |
| 121.3.185.24 | 2030287128 | 0 |
| 121.3.185.25 | 2030287129 | 0 |
| 121.3.185.26 | 2030287130 | 0 |
| 121.3.185.27 | 2030287131 | 0 |
| 121.3.185.28 | 2030287132 | 0 |
| 121.3.185.29 | 2030287133 | 0 |
| 121.3.185.30 | 2030287134 | 0 |
| 121.3.185.31 | 2030287135 | 0 |
| 121.3.185.32 | 2030287136 | 0 |
| 121.3.185.33 | 2030287137 | 0 |
| 121.3.185.34 | 2030287138 | 0 |
| 121.3.185.35 | 2030287139 | 0 |
| 121.3.185.36 | 2030287140 | 0 |
| 121.3.185.37 | 2030287141 | 0 |
| 121.3.185.38 | 2030287142 | 0 |
| 121.3.185.39 | 2030287143 | 0 |
| 121.3.185.40 | 2030287144 | 0 |
| 121.3.185.41 | 2030287145 | 0 |
| 121.3.185.42 | 2030287146 | 0 |
| 121.3.185.43 | 2030287147 | 0 |
| 121.3.185.44 | 2030287148 | 0 |
| 121.3.185.45 | 2030287149 | 0 |
| 121.3.185.46 | 2030287150 | 0 |
| 121.3.185.47 | 2030287151 | 0 |
| 121.3.185.48 | 2030287152 | 0 |
| 121.3.185.49 | 2030287153 | 0 |
| 121.3.185.50 | 2030287154 | 0 |
| 121.3.185.51 | 2030287155 | 0 |
| 121.3.185.52 | 2030287156 | 0 |
| 121.3.185.53 | 2030287157 | 0 |
| 121.3.185.54 | 2030287158 | 0 |
| 121.3.185.55 | 2030287159 | 0 |
| 121.3.185.56 | 2030287160 | 0 |
| 121.3.185.57 | 2030287161 | 0 |
| 121.3.185.58 | 2030287162 | 0 |
| 121.3.185.59 | 2030287163 | 0 |
| 121.3.185.60 | 2030287164 | 0 |
| 121.3.185.61 | 2030287165 | 0 |
| 121.3.185.62 | 2030287166 | 0 |
| 121.3.185.63 | 2030287167 | 0 |
| 121.3.185.64 | 2030287168 | 0 |
| 121.3.185.65 | 2030287169 | 0 |
| 121.3.185.66 | 2030287170 | 0 |
| 121.3.185.67 | 2030287171 | 0 |
| 121.3.185.68 | 2030287172 | 0 |
| 121.3.185.69 | 2030287173 | 0 |
| 121.3.185.70 | 2030287174 | 0 |
| 121.3.185.71 | 2030287175 | 0 |
| 121.3.185.72 | 2030287176 | 0 |
| 121.3.185.73 | 2030287177 | 0 |
| 121.3.185.74 | 2030287178 | 0 |
| 121.3.185.75 | 2030287179 | 0 |
| 121.3.185.76 | 2030287180 | 0 |
| 121.3.185.77 | 2030287181 | 0 |
| 121.3.185.78 | 2030287182 | 0 |
| 121.3.185.79 | 2030287183 | 0 |
| 121.3.185.80 | 2030287184 | 0 |
| 121.3.185.81 | 2030287185 | 0 |
| 121.3.185.82 | 2030287186 | 0 |
| 121.3.185.83 | 2030287187 | 0 |
| 121.3.185.84 | 2030287188 | 0 |
| 121.3.185.85 | 2030287189 | 0 |