Les adresses IP débutant par 121.2.200 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 | 18/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | JP | Japan | - | Tokyo | 35,6895 | 139,6917 | 2017-08-18 |
| MaxMind | JP | Japon | - | Tokyo | 35,6427 | 139,7677 | 2017-08-18 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.2.200.0 | 2030225408 | 0 |
| 121.2.200.1 | 2030225409 | 0 |
| 121.2.200.2 | 2030225410 | 0 |
| 121.2.200.3 | 2030225411 | 0 |
| 121.2.200.4 | 2030225412 | 0 |
| 121.2.200.5 | 2030225413 | 0 |
| 121.2.200.6 | 2030225414 | 0 |
| 121.2.200.7 | 2030225415 | 0 |
| 121.2.200.8 | 2030225416 | 0 |
| 121.2.200.9 | 2030225417 | 0 |
| 121.2.200.10 | 2030225418 | 0 |
| 121.2.200.11 | 2030225419 | 0 |
| 121.2.200.12 | 2030225420 | 0 |
| 121.2.200.13 | 2030225421 | 0 |
| 121.2.200.14 | 2030225422 | 0 |
| 121.2.200.15 | 2030225423 | 0 |
| 121.2.200.16 | 2030225424 | 0 |
| 121.2.200.17 | 2030225425 | 0 |
| 121.2.200.18 | 2030225426 | 0 |
| 121.2.200.19 | 2030225427 | 0 |
| 121.2.200.20 | 2030225428 | 0 |
| 121.2.200.21 | 2030225429 | 0 |
| 121.2.200.22 | 2030225430 | 0 |
| 121.2.200.23 | 2030225431 | 0 |
| 121.2.200.24 | 2030225432 | 0 |
| 121.2.200.25 | 2030225433 | 0 |
| 121.2.200.26 | 2030225434 | 0 |
| 121.2.200.27 | 2030225435 | 0 |
| 121.2.200.28 | 2030225436 | 0 |
| 121.2.200.29 | 2030225437 | 0 |
| 121.2.200.30 | 2030225438 | 0 |
| 121.2.200.31 | 2030225439 | 0 |
| 121.2.200.32 | 2030225440 | 0 |
| 121.2.200.33 | 2030225441 | 0 |
| 121.2.200.34 | 2030225442 | 0 |
| 121.2.200.35 | 2030225443 | 0 |
| 121.2.200.36 | 2030225444 | 0 |
| 121.2.200.37 | 2030225445 | 0 |
| 121.2.200.38 | 2030225446 | 0 |
| 121.2.200.39 | 2030225447 | 0 |
| 121.2.200.40 | 2030225448 | 0 |
| 121.2.200.41 | 2030225449 | 0 |
| 121.2.200.42 | 2030225450 | 0 |
| 121.2.200.43 | 2030225451 | 0 |
| 121.2.200.44 | 2030225452 | 0 |
| 121.2.200.45 | 2030225453 | 0 |
| 121.2.200.46 | 2030225454 | 0 |
| 121.2.200.47 | 2030225455 | 0 |
| 121.2.200.48 | 2030225456 | 0 |
| 121.2.200.49 | 2030225457 | 0 |
| 121.2.200.50 | 2030225458 | 0 |
| 121.2.200.51 | 2030225459 | 0 |
| 121.2.200.52 | 2030225460 | 0 |
| 121.2.200.53 | 2030225461 | 0 |
| 121.2.200.54 | 2030225462 | 0 |
| 121.2.200.55 | 2030225463 | 0 |
| 121.2.200.56 | 2030225464 | 0 |
| 121.2.200.57 | 2030225465 | 0 |
| 121.2.200.58 | 2030225466 | 0 |
| 121.2.200.59 | 2030225467 | 0 |
| 121.2.200.60 | 2030225468 | 0 |
| 121.2.200.61 | 2030225469 | 0 |
| 121.2.200.62 | 2030225470 | 0 |
| 121.2.200.63 | 2030225471 | 0 |
| 121.2.200.64 | 2030225472 | 0 |
| 121.2.200.65 | 2030225473 | 0 |
| 121.2.200.66 | 2030225474 | 0 |
| 121.2.200.67 | 2030225475 | 0 |
| 121.2.200.68 | 2030225476 | 0 |
| 121.2.200.69 | 2030225477 | 0 |
| 121.2.200.70 | 2030225478 | 0 |
| 121.2.200.71 | 2030225479 | 0 |
| 121.2.200.72 | 2030225480 | 0 |
| 121.2.200.73 | 2030225481 | 0 |
| 121.2.200.74 | 2030225482 | 0 |
| 121.2.200.75 | 2030225483 | 0 |
| 121.2.200.76 | 2030225484 | 0 |
| 121.2.200.77 | 2030225485 | 0 |
| 121.2.200.78 | 2030225486 | 0 |
| 121.2.200.79 | 2030225487 | 0 |
| 121.2.200.80 | 2030225488 | 0 |
| 121.2.200.81 | 2030225489 | 0 |
| 121.2.200.82 | 2030225490 | 0 |
| 121.2.200.83 | 2030225491 | 0 |
| 121.2.200.84 | 2030225492 | 0 |
| 121.2.200.85 | 2030225493 | 0 |