Les adresses IP débutant par 121.5.204 sont fournies par China Networks Inter-Exchange, elles appartiennent au CIDR (Classless Inter-Domain Routing) 121.5.0.0/16, le bloc IP comprant les adresses de 121.5.0.0 à 121.5.255.255). Le numéro de système autonome (ASN) est 4847.
| ASN | 4847 |
| IP commençant par | 121.5.0.0 |
| IP se terminant par | 121.5.255.255 |
| Nom ASN | China Networks Inter-Exchange |
| CDIR | 121.5.0.0/16 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 02/04/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | CN | Chine | - | Changchun | 43,88 | 125,3228 | 2018-04-01 |
| MaxMind | CN | Chine | - | Beijing | 39,9289 | 116,3883 | 2018-04-01 |
| Whois | CN | - | - | - | 104 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.5.204.0 | 2030423040 | 0 |
| 121.5.204.1 | 2030423041 | 0 |
| 121.5.204.2 | 2030423042 | 0 |
| 121.5.204.3 | 2030423043 | 0 |
| 121.5.204.4 | 2030423044 | 0 |
| 121.5.204.5 | 2030423045 | 0 |
| 121.5.204.6 | 2030423046 | 0 |
| 121.5.204.7 | 2030423047 | 0 |
| 121.5.204.8 | 2030423048 | 0 |
| 121.5.204.9 | 2030423049 | 0 |
| 121.5.204.10 | 2030423050 | 0 |
| 121.5.204.11 | 2030423051 | 0 |
| 121.5.204.12 | 2030423052 | 0 |
| 121.5.204.13 | 2030423053 | 0 |
| 121.5.204.14 | 2030423054 | 0 |
| 121.5.204.15 | 2030423055 | 0 |
| 121.5.204.16 | 2030423056 | 0 |
| 121.5.204.17 | 2030423057 | 0 |
| 121.5.204.18 | 2030423058 | 0 |
| 121.5.204.19 | 2030423059 | 0 |
| 121.5.204.20 | 2030423060 | 0 |
| 121.5.204.21 | 2030423061 | 0 |
| 121.5.204.22 | 2030423062 | 0 |
| 121.5.204.23 | 2030423063 | 0 |
| 121.5.204.24 | 2030423064 | 0 |
| 121.5.204.25 | 2030423065 | 0 |
| 121.5.204.26 | 2030423066 | 0 |
| 121.5.204.27 | 2030423067 | 0 |
| 121.5.204.28 | 2030423068 | 0 |
| 121.5.204.29 | 2030423069 | 0 |
| 121.5.204.30 | 2030423070 | 0 |
| 121.5.204.31 | 2030423071 | 0 |
| 121.5.204.32 | 2030423072 | 0 |
| 121.5.204.33 | 2030423073 | 0 |
| 121.5.204.34 | 2030423074 | 0 |
| 121.5.204.35 | 2030423075 | 0 |
| 121.5.204.36 | 2030423076 | 0 |
| 121.5.204.37 | 2030423077 | 0 |
| 121.5.204.38 | 2030423078 | 0 |
| 121.5.204.39 | 2030423079 | 0 |
| 121.5.204.40 | 2030423080 | 0 |
| 121.5.204.41 | 2030423081 | 0 |
| 121.5.204.42 | 2030423082 | 0 |
| 121.5.204.43 | 2030423083 | 0 |
| 121.5.204.44 | 2030423084 | 0 |
| 121.5.204.45 | 2030423085 | 0 |
| 121.5.204.46 | 2030423086 | 0 |
| 121.5.204.47 | 2030423087 | 0 |
| 121.5.204.48 | 2030423088 | 0 |
| 121.5.204.49 | 2030423089 | 0 |
| 121.5.204.50 | 2030423090 | 0 |
| 121.5.204.51 | 2030423091 | 0 |
| 121.5.204.52 | 2030423092 | 0 |
| 121.5.204.53 | 2030423093 | 0 |
| 121.5.204.54 | 2030423094 | 0 |
| 121.5.204.55 | 2030423095 | 0 |
| 121.5.204.56 | 2030423096 | 0 |
| 121.5.204.57 | 2030423097 | 0 |
| 121.5.204.58 | 2030423098 | 0 |
| 121.5.204.59 | 2030423099 | 0 |
| 121.5.204.60 | 2030423100 | 0 |
| 121.5.204.61 | 2030423101 | 0 |
| 121.5.204.62 | 2030423102 | 0 |
| 121.5.204.63 | 2030423103 | 0 |
| 121.5.204.64 | 2030423104 | 0 |
| 121.5.204.65 | 2030423105 | 0 |
| 121.5.204.66 | 2030423106 | 0 |
| 121.5.204.67 | 2030423107 | 0 |
| 121.5.204.68 | 2030423108 | 0 |
| 121.5.204.69 | 2030423109 | 0 |
| 121.5.204.70 | 2030423110 | 0 |
| 121.5.204.71 | 2030423111 | 0 |
| 121.5.204.72 | 2030423112 | 0 |
| 121.5.204.73 | 2030423113 | 0 |
| 121.5.204.74 | 2030423114 | 0 |
| 121.5.204.75 | 2030423115 | 0 |
| 121.5.204.76 | 2030423116 | 0 |
| 121.5.204.77 | 2030423117 | 0 |
| 121.5.204.78 | 2030423118 | 0 |
| 121.5.204.79 | 2030423119 | 0 |
| 121.5.204.80 | 2030423120 | 0 |
| 121.5.204.81 | 2030423121 | 0 |
| 121.5.204.82 | 2030423122 | 0 |
| 121.5.204.83 | 2030423123 | 0 |
| 121.5.204.84 | 2030423124 | 0 |
| 121.5.204.85 | 2030423125 | 0 |