Les adresses IP débutant par 121.4.128 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 | 21/10/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | CN | Chine | - | Shenyang | 41,7922 | 123,4328 | 2019-08-12 |
| MaxMind | SG | Singapour | - | Singapore | 1,2855 | 103,8565 | 2019-08-12 |
| Whois | CN | - | - | - | 104 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.4.128.0 | 2030338048 | 0 |
| 121.4.128.1 | 2030338049 | 0 |
| 121.4.128.2 | 2030338050 | 0 |
| 121.4.128.3 | 2030338051 | 0 |
| 121.4.128.4 | 2030338052 | 0 |
| 121.4.128.5 | 2030338053 | 0 |
| 121.4.128.6 | 2030338054 | 0 |
| 121.4.128.7 | 2030338055 | 0 |
| 121.4.128.8 | 2030338056 | 0 |
| 121.4.128.9 | 2030338057 | 0 |
| 121.4.128.10 | 2030338058 | 0 |
| 121.4.128.11 | 2030338059 | 0 |
| 121.4.128.12 | 2030338060 | 0 |
| 121.4.128.13 | 2030338061 | 0 |
| 121.4.128.14 | 2030338062 | 0 |
| 121.4.128.15 | 2030338063 | 0 |
| 121.4.128.16 | 2030338064 | 0 |
| 121.4.128.17 | 2030338065 | 0 |
| 121.4.128.18 | 2030338066 | 0 |
| 121.4.128.19 | 2030338067 | 0 |
| 121.4.128.20 | 2030338068 | 0 |
| 121.4.128.21 | 2030338069 | 0 |
| 121.4.128.22 | 2030338070 | 0 |
| 121.4.128.23 | 2030338071 | 0 |
| 121.4.128.24 | 2030338072 | 0 |
| 121.4.128.25 | 2030338073 | 0 |
| 121.4.128.26 | 2030338074 | 0 |
| 121.4.128.27 | 2030338075 | 0 |
| 121.4.128.28 | 2030338076 | 0 |
| 121.4.128.29 | 2030338077 | 0 |
| 121.4.128.30 | 2030338078 | 0 |
| 121.4.128.31 | 2030338079 | 0 |
| 121.4.128.32 | 2030338080 | 0 |
| 121.4.128.33 | 2030338081 | 0 |
| 121.4.128.34 | 2030338082 | 0 |
| 121.4.128.35 | 2030338083 | 0 |
| 121.4.128.36 | 2030338084 | 0 |
| 121.4.128.37 | 2030338085 | 0 |
| 121.4.128.38 | 2030338086 | 0 |
| 121.4.128.39 | 2030338087 | 0 |
| 121.4.128.40 | 2030338088 | 0 |
| 121.4.128.41 | 2030338089 | 0 |
| 121.4.128.42 | 2030338090 | 0 |
| 121.4.128.43 | 2030338091 | 0 |
| 121.4.128.44 | 2030338092 | 0 |
| 121.4.128.45 | 2030338093 | 0 |
| 121.4.128.46 | 2030338094 | 0 |
| 121.4.128.47 | 2030338095 | 0 |
| 121.4.128.48 | 2030338096 | 0 |
| 121.4.128.49 | 2030338097 | 0 |
| 121.4.128.50 | 2030338098 | 0 |
| 121.4.128.51 | 2030338099 | 0 |
| 121.4.128.52 | 2030338100 | 0 |
| 121.4.128.53 | 2030338101 | 0 |
| 121.4.128.54 | 2030338102 | 0 |
| 121.4.128.55 | 2030338103 | 0 |
| 121.4.128.56 | 2030338104 | 0 |
| 121.4.128.57 | 2030338105 | 0 |
| 121.4.128.58 | 2030338106 | 0 |
| 121.4.128.59 | 2030338107 | 0 |
| 121.4.128.60 | 2030338108 | 0 |
| 121.4.128.61 | 2030338109 | 0 |
| 121.4.128.62 | 2030338110 | 0 |
| 121.4.128.63 | 2030338111 | 0 |
| 121.4.128.64 | 2030338112 | 0 |
| 121.4.128.65 | 2030338113 | 0 |
| 121.4.128.66 | 2030338114 | 0 |
| 121.4.128.67 | 2030338115 | 0 |
| 121.4.128.68 | 2030338116 | 0 |
| 121.4.128.69 | 2030338117 | 0 |
| 121.4.128.70 | 2030338118 | 0 |
| 121.4.128.71 | 2030338119 | 0 |
| 121.4.128.72 | 2030338120 | 0 |
| 121.4.128.73 | 2030338121 | 0 |
| 121.4.128.74 | 2030338122 | 0 |
| 121.4.128.75 | 2030338123 | 0 |
| 121.4.128.76 | 2030338124 | 0 |
| 121.4.128.77 | 2030338125 | 0 |
| 121.4.128.78 | 2030338126 | 0 |
| 121.4.128.79 | 2030338127 | 0 |
| 121.4.128.80 | 2030338128 | 0 |
| 121.4.128.81 | 2030338129 | 0 |
| 121.4.128.82 | 2030338130 | 0 |
| 121.4.128.83 | 2030338131 | 0 |
| 121.4.128.84 | 2030338132 | 0 |
| 121.4.128.85 | 2030338133 | 0 |