Les adresses IP débutant par 121.2.180 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 | 02/07/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | JP | Japan | - | Tokyo | 35,6895 | 139,6917 | 2018-07-02 |
| MaxMind | JP | Japon | - | Tokyo | 35,6427 | 139,7677 | 2018-07-02 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.2.180.0 | 2030220288 | 0 |
| 121.2.180.1 | 2030220289 | 0 |
| 121.2.180.2 | 2030220290 | 0 |
| 121.2.180.3 | 2030220291 | 0 |
| 121.2.180.4 | 2030220292 | 0 |
| 121.2.180.5 | 2030220293 | 0 |
| 121.2.180.6 | 2030220294 | 0 |
| 121.2.180.7 | 2030220295 | 0 |
| 121.2.180.8 | 2030220296 | 0 |
| 121.2.180.9 | 2030220297 | 0 |
| 121.2.180.10 | 2030220298 | 0 |
| 121.2.180.11 | 2030220299 | 0 |
| 121.2.180.12 | 2030220300 | 0 |
| 121.2.180.13 | 2030220301 | 0 |
| 121.2.180.14 | 2030220302 | 0 |
| 121.2.180.15 | 2030220303 | 0 |
| 121.2.180.16 | 2030220304 | 0 |
| 121.2.180.17 | 2030220305 | 0 |
| 121.2.180.18 | 2030220306 | 0 |
| 121.2.180.19 | 2030220307 | 0 |
| 121.2.180.20 | 2030220308 | 0 |
| 121.2.180.21 | 2030220309 | 0 |
| 121.2.180.22 | 2030220310 | 0 |
| 121.2.180.23 | 2030220311 | 0 |
| 121.2.180.24 | 2030220312 | 0 |
| 121.2.180.25 | 2030220313 | 0 |
| 121.2.180.26 | 2030220314 | 0 |
| 121.2.180.27 | 2030220315 | 0 |
| 121.2.180.28 | 2030220316 | 0 |
| 121.2.180.29 | 2030220317 | 0 |
| 121.2.180.30 | 2030220318 | 0 |
| 121.2.180.31 | 2030220319 | 0 |
| 121.2.180.32 | 2030220320 | 0 |
| 121.2.180.33 | 2030220321 | 0 |
| 121.2.180.34 | 2030220322 | 0 |
| 121.2.180.35 | 2030220323 | 0 |
| 121.2.180.36 | 2030220324 | 0 |
| 121.2.180.37 | 2030220325 | 0 |
| 121.2.180.38 | 2030220326 | 0 |
| 121.2.180.39 | 2030220327 | 0 |
| 121.2.180.40 | 2030220328 | 0 |
| 121.2.180.41 | 2030220329 | 0 |
| 121.2.180.42 | 2030220330 | 0 |
| 121.2.180.43 | 2030220331 | 0 |
| 121.2.180.44 | 2030220332 | 0 |
| 121.2.180.45 | 2030220333 | 0 |
| 121.2.180.46 | 2030220334 | 0 |
| 121.2.180.47 | 2030220335 | 0 |
| 121.2.180.48 | 2030220336 | 0 |
| 121.2.180.49 | 2030220337 | 0 |
| 121.2.180.50 | 2030220338 | 0 |
| 121.2.180.51 | 2030220339 | 0 |
| 121.2.180.52 | 2030220340 | 0 |
| 121.2.180.53 | 2030220341 | 0 |
| 121.2.180.54 | 2030220342 | 0 |
| 121.2.180.55 | 2030220343 | 0 |
| 121.2.180.56 | 2030220344 | 0 |
| 121.2.180.57 | 2030220345 | 0 |
| 121.2.180.58 | 2030220346 | 0 |
| 121.2.180.59 | 2030220347 | 0 |
| 121.2.180.60 | 2030220348 | 0 |
| 121.2.180.61 | 2030220349 | 0 |
| 121.2.180.62 | 2030220350 | 0 |
| 121.2.180.63 | 2030220351 | 0 |
| 121.2.180.64 | 2030220352 | 0 |
| 121.2.180.65 | 2030220353 | 0 |
| 121.2.180.66 | 2030220354 | 0 |
| 121.2.180.67 | 2030220355 | 0 |
| 121.2.180.68 | 2030220356 | 0 |
| 121.2.180.69 | 2030220357 | 0 |
| 121.2.180.70 | 2030220358 | 0 |
| 121.2.180.71 | 2030220359 | 0 |
| 121.2.180.72 | 2030220360 | 0 |
| 121.2.180.73 | 2030220361 | 0 |
| 121.2.180.74 | 2030220362 | 0 |
| 121.2.180.75 | 2030220363 | 0 |
| 121.2.180.76 | 2030220364 | 0 |
| 121.2.180.77 | 2030220365 | 0 |
| 121.2.180.78 | 2030220366 | 0 |
| 121.2.180.79 | 2030220367 | 0 |
| 121.2.180.80 | 2030220368 | 0 |
| 121.2.180.81 | 2030220369 | 0 |
| 121.2.180.82 | 2030220370 | 0 |
| 121.2.180.83 | 2030220371 | 0 |
| 121.2.180.84 | 2030220372 | 0 |
| 121.2.180.85 | 2030220373 | 0 |