Les adresses IP débutant par 131.205.4 sont fournies par Research Organization of Information and Systems, National Institute of Informatics, elles appartiennent au CIDR (Classless Inter-Domain Routing) 131.206.0.0/16, le bloc IP comprant les adresses de 131.206.0.0 à 131.206.255.255). Le numéro de système autonome (ASN) est 2907.
| ASN | 2907 |
| IP commençant par | 131.206.0.0 |
| IP se terminant par | 131.206.255.255 |
| Nom ASN | Research Organization of Information and Systems, National Institute of Informatics |
| CDIR | 131.206.0.0/16 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 31/03/2020 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | JP | Japon | - | Kitakyushu | 33,8333 | 130,8333 | 2020-03-31 |
| MaxMind | JP | Japon | - | - | 35,69 | 139,69 | 2020-03-31 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 131.205.4.0 | 2211251200 | 0 |
| 131.205.4.1 | 2211251201 | 0 |
| 131.205.4.2 | 2211251202 | 0 |
| 131.205.4.3 | 2211251203 | 0 |
| 131.205.4.4 | 2211251204 | 0 |
| 131.205.4.5 | 2211251205 | 0 |
| 131.205.4.6 | 2211251206 | 0 |
| 131.205.4.7 | 2211251207 | 0 |
| 131.205.4.8 | 2211251208 | 0 |
| 131.205.4.9 | 2211251209 | 0 |
| 131.205.4.10 | 2211251210 | 0 |
| 131.205.4.11 | 2211251211 | 0 |
| 131.205.4.12 | 2211251212 | 0 |
| 131.205.4.13 | 2211251213 | 0 |
| 131.205.4.14 | 2211251214 | 0 |
| 131.205.4.15 | 2211251215 | 0 |
| 131.205.4.16 | 2211251216 | 0 |
| 131.205.4.17 | 2211251217 | 0 |
| 131.205.4.18 | 2211251218 | 0 |
| 131.205.4.19 | 2211251219 | 0 |
| 131.205.4.20 | 2211251220 | 0 |
| 131.205.4.21 | 2211251221 | 0 |
| 131.205.4.22 | 2211251222 | 0 |
| 131.205.4.23 | 2211251223 | 0 |
| 131.205.4.24 | 2211251224 | 0 |
| 131.205.4.25 | 2211251225 | 0 |
| 131.205.4.26 | 2211251226 | 0 |
| 131.205.4.27 | 2211251227 | 0 |
| 131.205.4.28 | 2211251228 | 0 |
| 131.205.4.29 | 2211251229 | 0 |
| 131.205.4.30 | 2211251230 | 0 |
| 131.205.4.31 | 2211251231 | 0 |
| 131.205.4.32 | 2211251232 | 0 |
| 131.205.4.33 | 2211251233 | 0 |
| 131.205.4.34 | 2211251234 | 0 |
| 131.205.4.35 | 2211251235 | 0 |
| 131.205.4.36 | 2211251236 | 0 |
| 131.205.4.37 | 2211251237 | 0 |
| 131.205.4.38 | 2211251238 | 0 |
| 131.205.4.39 | 2211251239 | 0 |
| 131.205.4.40 | 2211251240 | 0 |
| 131.205.4.41 | 2211251241 | 0 |
| 131.205.4.42 | 2211251242 | 0 |
| 131.205.4.43 | 2211251243 | 0 |
| 131.205.4.44 | 2211251244 | 0 |
| 131.205.4.45 | 2211251245 | 0 |
| 131.205.4.46 | 2211251246 | 0 |
| 131.205.4.47 | 2211251247 | 0 |
| 131.205.4.48 | 2211251248 | 0 |
| 131.205.4.49 | 2211251249 | 0 |
| 131.205.4.50 | 2211251250 | 0 |
| 131.205.4.51 | 2211251251 | 0 |
| 131.205.4.52 | 2211251252 | 0 |
| 131.205.4.53 | 2211251253 | 0 |
| 131.205.4.54 | 2211251254 | 0 |
| 131.205.4.55 | 2211251255 | 0 |
| 131.205.4.56 | 2211251256 | 0 |
| 131.205.4.57 | 2211251257 | 0 |
| 131.205.4.58 | 2211251258 | 0 |
| 131.205.4.59 | 2211251259 | 0 |
| 131.205.4.60 | 2211251260 | 0 |
| 131.205.4.61 | 2211251261 | 0 |
| 131.205.4.62 | 2211251262 | 0 |
| 131.205.4.63 | 2211251263 | 0 |
| 131.205.4.64 | 2211251264 | 0 |
| 131.205.4.65 | 2211251265 | 0 |
| 131.205.4.66 | 2211251266 | 0 |
| 131.205.4.67 | 2211251267 | 0 |
| 131.205.4.68 | 2211251268 | 0 |
| 131.205.4.69 | 2211251269 | 0 |
| 131.205.4.70 | 2211251270 | 0 |
| 131.205.4.71 | 2211251271 | 0 |
| 131.205.4.72 | 2211251272 | 0 |
| 131.205.4.73 | 2211251273 | 0 |
| 131.205.4.74 | 2211251274 | 0 |
| 131.205.4.75 | 2211251275 | 0 |
| 131.205.4.76 | 2211251276 | 0 |
| 131.205.4.77 | 2211251277 | 0 |
| 131.205.4.78 | 2211251278 | 0 |
| 131.205.4.79 | 2211251279 | 0 |
| 131.205.4.80 | 2211251280 | 0 |
| 131.205.4.81 | 2211251281 | 0 |
| 131.205.4.82 | 2211251282 | 0 |
| 131.205.4.83 | 2211251283 | 0 |
| 131.205.4.84 | 2211251284 | 0 |
| 131.205.4.85 | 2211251285 | 0 |