Les adresses IP débutant par 121.4.125 sont fournies par China Networks Inter-Exchange, elles appartiennent au CIDR (Classless Inter-Domain Routing) 121.4.0.0/16, le bloc IP comprant les adresses de 121.4.0.0 à 121.4.255.255). Le numéro de système autonome (ASN) est 4847.
| ASN | 4847 |
| IP commençant par | 121.4.0.0 |
| IP se terminant par | 121.4.255.255 |
| Nom ASN | China Networks Inter-Exchange |
| CDIR | 121.4.0.0/16 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 19/10/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | CN | China | - | Beijing | 39,9075 | 116,3972 | 2019-07-13 |
| MaxMind | SG | Singapour | - | Singapore | 1,2855 | 103,8565 | 2019-07-13 |
| Whois | CN | - | - | - | 104 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.4.125.0 | 2030337280 | 0 |
| 121.4.125.1 | 2030337281 | 0 |
| 121.4.125.2 | 2030337282 | 0 |
| 121.4.125.3 | 2030337283 | 0 |
| 121.4.125.4 | 2030337284 | 0 |
| 121.4.125.5 | 2030337285 | 0 |
| 121.4.125.6 | 2030337286 | 0 |
| 121.4.125.7 | 2030337287 | 0 |
| 121.4.125.8 | 2030337288 | 0 |
| 121.4.125.9 | 2030337289 | 0 |
| 121.4.125.10 | 2030337290 | 0 |
| 121.4.125.11 | 2030337291 | 0 |
| 121.4.125.12 | 2030337292 | 0 |
| 121.4.125.13 | 2030337293 | 0 |
| 121.4.125.14 | 2030337294 | 0 |
| 121.4.125.15 | 2030337295 | 0 |
| 121.4.125.16 | 2030337296 | 0 |
| 121.4.125.17 | 2030337297 | 0 |
| 121.4.125.18 | 2030337298 | 0 |
| 121.4.125.19 | 2030337299 | 0 |
| 121.4.125.20 | 2030337300 | 0 |
| 121.4.125.21 | 2030337301 | 0 |
| 121.4.125.22 | 2030337302 | 0 |
| 121.4.125.23 | 2030337303 | 0 |
| 121.4.125.24 | 2030337304 | 0 |
| 121.4.125.25 | 2030337305 | 0 |
| 121.4.125.26 | 2030337306 | 0 |
| 121.4.125.27 | 2030337307 | 0 |
| 121.4.125.28 | 2030337308 | 0 |
| 121.4.125.29 | 2030337309 | 0 |
| 121.4.125.30 | 2030337310 | 0 |
| 121.4.125.31 | 2030337311 | 0 |
| 121.4.125.32 | 2030337312 | 0 |
| 121.4.125.33 | 2030337313 | 0 |
| 121.4.125.34 | 2030337314 | 0 |
| 121.4.125.35 | 2030337315 | 0 |
| 121.4.125.36 | 2030337316 | 0 |
| 121.4.125.37 | 2030337317 | 0 |
| 121.4.125.38 | 2030337318 | 0 |
| 121.4.125.39 | 2030337319 | 0 |
| 121.4.125.40 | 2030337320 | 0 |
| 121.4.125.41 | 2030337321 | 0 |
| 121.4.125.42 | 2030337322 | 0 |
| 121.4.125.43 | 2030337323 | 0 |
| 121.4.125.44 | 2030337324 | 0 |
| 121.4.125.45 | 2030337325 | 0 |
| 121.4.125.46 | 2030337326 | 0 |
| 121.4.125.47 | 2030337327 | 0 |
| 121.4.125.48 | 2030337328 | 0 |
| 121.4.125.49 | 2030337329 | 0 |
| 121.4.125.50 | 2030337330 | 0 |
| 121.4.125.51 | 2030337331 | 0 |
| 121.4.125.52 | 2030337332 | 0 |
| 121.4.125.53 | 2030337333 | 0 |
| 121.4.125.54 | 2030337334 | 0 |
| 121.4.125.55 | 2030337335 | 0 |
| 121.4.125.56 | 2030337336 | 0 |
| 121.4.125.57 | 2030337337 | 0 |
| 121.4.125.58 | 2030337338 | 0 |
| 121.4.125.59 | 2030337339 | 0 |
| 121.4.125.60 | 2030337340 | 0 |
| 121.4.125.61 | 2030337341 | 0 |
| 121.4.125.62 | 2030337342 | 0 |
| 121.4.125.63 | 2030337343 | 0 |
| 121.4.125.64 | 2030337344 | 0 |
| 121.4.125.65 | 2030337345 | 0 |
| 121.4.125.66 | 2030337346 | 0 |
| 121.4.125.67 | 2030337347 | 0 |
| 121.4.125.68 | 2030337348 | 0 |
| 121.4.125.69 | 2030337349 | 0 |
| 121.4.125.70 | 2030337350 | 0 |
| 121.4.125.71 | 2030337351 | 0 |
| 121.4.125.72 | 2030337352 | 0 |
| 121.4.125.73 | 2030337353 | 0 |
| 121.4.125.74 | 2030337354 | 0 |
| 121.4.125.75 | 2030337355 | 0 |
| 121.4.125.76 | 2030337356 | 0 |
| 121.4.125.77 | 2030337357 | 0 |
| 121.4.125.78 | 2030337358 | 0 |
| 121.4.125.79 | 2030337359 | 0 |
| 121.4.125.80 | 2030337360 | 0 |
| 121.4.125.81 | 2030337361 | 0 |
| 121.4.125.82 | 2030337362 | 0 |
| 121.4.125.83 | 2030337363 | 0 |
| 121.4.125.84 | 2030337364 | 0 |
| 121.4.125.85 | 2030337365 | 0 |