Les adresses IP débutant par 121.1.252 sont fournies par Asahi Net, elles appartiennent au CIDR (Classless Inter-Domain Routing) 121.1.128.0/17, le bloc IP comprant les adresses de 121.1.128.0 à 121.1.255.255). Le numéro de système autonome (ASN) est 4685.
| ASN | 4685 |
| IP commençant par | 121.1.128.0 |
| IP se terminant par | 121.1.255.255 |
| Nom ASN | Asahi Net |
| CDIR | 121.1.128.0/17 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 12/07/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | JP | Japan | - | Tokyo | 35,6895 | 139,6917 | 2017-07-12 |
| MaxMind | JP | Japon | - | Tokyo | 35,6427 | 139,7677 | 2017-07-12 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.1.252.0 | 2030173184 | 0 |
| 121.1.252.1 | 2030173185 | 0 |
| 121.1.252.2 | 2030173186 | 0 |
| 121.1.252.3 | 2030173187 | 0 |
| 121.1.252.4 | 2030173188 | 0 |
| 121.1.252.5 | 2030173189 | 0 |
| 121.1.252.6 | 2030173190 | 0 |
| 121.1.252.7 | 2030173191 | 0 |
| 121.1.252.8 | 2030173192 | 0 |
| 121.1.252.9 | 2030173193 | 0 |
| 121.1.252.10 | 2030173194 | 0 |
| 121.1.252.11 | 2030173195 | 0 |
| 121.1.252.12 | 2030173196 | 0 |
| 121.1.252.13 | 2030173197 | 0 |
| 121.1.252.14 | 2030173198 | 0 |
| 121.1.252.15 | 2030173199 | 0 |
| 121.1.252.16 | 2030173200 | 0 |
| 121.1.252.17 | 2030173201 | 0 |
| 121.1.252.18 | 2030173202 | 0 |
| 121.1.252.19 | 2030173203 | 0 |
| 121.1.252.20 | 2030173204 | 0 |
| 121.1.252.21 | 2030173205 | 0 |
| 121.1.252.22 | 2030173206 | 0 |
| 121.1.252.23 | 2030173207 | 0 |
| 121.1.252.24 | 2030173208 | 0 |
| 121.1.252.25 | 2030173209 | 0 |
| 121.1.252.26 | 2030173210 | 0 |
| 121.1.252.27 | 2030173211 | 0 |
| 121.1.252.28 | 2030173212 | 0 |
| 121.1.252.29 | 2030173213 | 0 |
| 121.1.252.30 | 2030173214 | 0 |
| 121.1.252.31 | 2030173215 | 0 |
| 121.1.252.32 | 2030173216 | 0 |
| 121.1.252.33 | 2030173217 | 0 |
| 121.1.252.34 | 2030173218 | 0 |
| 121.1.252.35 | 2030173219 | 0 |
| 121.1.252.36 | 2030173220 | 0 |
| 121.1.252.37 | 2030173221 | 0 |
| 121.1.252.38 | 2030173222 | 0 |
| 121.1.252.39 | 2030173223 | 0 |
| 121.1.252.40 | 2030173224 | 0 |
| 121.1.252.41 | 2030173225 | 0 |
| 121.1.252.42 | 2030173226 | 0 |
| 121.1.252.43 | 2030173227 | 0 |
| 121.1.252.44 | 2030173228 | 0 |
| 121.1.252.45 | 2030173229 | 0 |
| 121.1.252.46 | 2030173230 | 0 |
| 121.1.252.47 | 2030173231 | 0 |
| 121.1.252.48 | 2030173232 | 0 |
| 121.1.252.49 | 2030173233 | 0 |
| 121.1.252.50 | 2030173234 | 0 |
| 121.1.252.51 | 2030173235 | 0 |
| 121.1.252.52 | 2030173236 | 0 |
| 121.1.252.53 | 2030173237 | 0 |
| 121.1.252.54 | 2030173238 | 0 |
| 121.1.252.55 | 2030173239 | 0 |
| 121.1.252.56 | 2030173240 | 0 |
| 121.1.252.57 | 2030173241 | 0 |
| 121.1.252.58 | 2030173242 | 0 |
| 121.1.252.59 | 2030173243 | 0 |
| 121.1.252.60 | 2030173244 | 0 |
| 121.1.252.61 | 2030173245 | 0 |
| 121.1.252.62 | 2030173246 | 0 |
| 121.1.252.63 | 2030173247 | 0 |
| 121.1.252.64 | 2030173248 | 0 |
| 121.1.252.65 | 2030173249 | 0 |
| 121.1.252.66 | 2030173250 | 0 |
| 121.1.252.67 | 2030173251 | 0 |
| 121.1.252.68 | 2030173252 | 0 |
| 121.1.252.69 | 2030173253 | 0 |
| 121.1.252.70 | 2030173254 | 0 |
| 121.1.252.71 | 2030173255 | 0 |
| 121.1.252.72 | 2030173256 | 0 |
| 121.1.252.73 | 2030173257 | 0 |
| 121.1.252.74 | 2030173258 | 0 |
| 121.1.252.75 | 2030173259 | 0 |
| 121.1.252.76 | 2030173260 | 0 |
| 121.1.252.77 | 2030173261 | 0 |
| 121.1.252.78 | 2030173262 | 0 |
| 121.1.252.79 | 2030173263 | 0 |
| 121.1.252.80 | 2030173264 | 0 |
| 121.1.252.81 | 2030173265 | 0 |
| 121.1.252.82 | 2030173266 | 0 |
| 121.1.252.83 | 2030173267 | 0 |
| 121.1.252.84 | 2030173268 | 0 |
| 121.1.252.85 | 2030173269 | 0 |