IPv4 prefix
133.0.0.0/8
- IP Prefix (CIDR)
- 133.0.0.0/8
- Subnet Mask
- 255.0.0.0
- Address Count
- 16,777,216
Registration 1 of 2
- Handle
- IRT-JPNIC-JP
- Country
-
Japan (JP)
- Address
- Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda Chiyoda-ku, Tokyo 101-0047, japan
- Registry
- APNIC
- Registered Prefix
- 133.0.0.0/8 (133.0.0.0 - 133.255.255.255)
Registration 2 of 2
- Owner
- Japan Network Information Center
- Handle
- JNIC1-AP
- Country
-
Japan (JP)
- Address
- Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda Chiyoda-ku, Tokyo 101-0047, Japan
- Registry
- JPNIC
- Registered Prefixes
-
133.18.0.0/24 (133.18.0.0 - 133.18.0.255)
133.32.0.0/24 (133.32.0.0 - 133.32.0.255)
133.32.72.0/21 (133.32.72.0 - 133.32.79.255)
133.32.80.0/20 (133.32.80.0 - 133.32.95.255)
133.32.100.0/22 (133.32.100.0 - 133.32.103.255)
133.32.104.0/22 (133.32.104.0 - 133.32.107.255)
133.32.108.0/23 (133.32.108.0 - 133.32.109.255)
133.32.112.0/21 (133.32.112.0 - 133.32.119.255)
133.32.128.0/24 (133.32.128.0 - 133.32.128.255)
133.32.152.0/24 (133.32.152.0 - 133.32.152.255)
133.32.164.0/24 (133.32.164.0 - 133.32.164.255)
133.32.172.0/24 (133.32.172.0 - 133.32.172.255)
133.32.176.0/24 (133.32.176.0 - 133.32.176.255)
133.32.192.0/21 (133.32.192.0 - 133.32.199.255)
133.32.208.0/30 (133.32.208.0 - 133.32.208.3)
133.32.224.0/24 (133.32.224.0 - 133.32.224.255)
133.88.0.0/24 (133.88.0.0 - 133.88.0.255)
133.88.16.0/24 (133.88.16.0 - 133.88.16.255)
133.88.20.0/24 (133.88.20.0 - 133.88.20.255)
133.88.28.0/24 (133.88.28.0 - 133.88.28.255)
133.88.31.0/24 (133.88.31.0 - 133.88.31.255)
133.88.32.0/23 (133.88.32.0 - 133.88.33.255)
133.88.48.0/20 (133.88.48.0 - 133.88.63.255)
133.88.64.0/24 (133.88.64.0 - 133.88.64.255)
133.88.75.0/24 (133.88.75.0 - 133.88.75.255)
133.88.76.0/23 (133.88.76.0 - 133.88.77.255)
133.88.78.0/24 (133.88.78.0 - 133.88.78.255)
133.88.79.0/24 (133.88.79.0 - 133.88.79.255)
133.88.80.0/22 (133.88.80.0 - 133.88.83.255)
133.88.84.0/23 (133.88.84.0 - 133.88.85.255)
133.88.86.0/24 (133.88.86.0 - 133.88.86.255)
133.88.87.0/24 (133.88.87.0 - 133.88.87.255)
133.88.88.0/22 (133.88.88.0 - 133.88.91.255)
133.88.92.0/24 (133.88.92.0 - 133.88.92.255)
133.88.94.0/24 (133.88.94.0 - 133.88.94.255)
133.88.96.0/25 (133.88.96.0 - 133.88.96.127)
133.88.224.0/19 (133.88.224.0 - 133.88.255.255)
133.106.0.0/21 (133.106.0.0 - 133.106.7.255)
133.106.8.0/21 (133.106.8.0 - 133.106.15.255)
133.106.8.0/22 (133.106.8.0 - 133.106.11.255)
133.106.12.0/24 (133.106.12.0 - 133.106.12.255)
133.106.16.0/20 (133.106.16.0 - 133.106.31.255)
133.106.32.0/19 (133.106.32.0 - 133.106.63.255)
133.106.64.0/18 (133.106.64.0 - 133.106.127.255)
133.106.128.0/17 (133.106.128.0 - 133.106.255.255)
133.110.0.0/18 (133.110.0.0 - 133.110.63.255)
133.110.64.0/20 (133.110.64.0 - 133.110.79.255)
133.112.0.0/16 (133.112.0.0 - 133.112.255.255)
133.114.0.0/19 (133.114.0.0 - 133.114.31.255)
133.117.64.0/23 (133.117.64.0 - 133.117.65.255)
133.117.80.0/20 (133.117.80.0 - 133.117.95.255)
133.117.96.0/21 (133.117.96.0 - 133.117.103.255)
133.117.112.0/20 (133.117.112.0 - 133.117.127.255)
133.117.144.0/22 (133.117.144.0 - 133.117.147.255)
133.117.148.0/22 (133.117.148.0 - 133.117.151.255)
133.117.152.0/22 (133.117.152.0 - 133.117.155.255)
133.117.160.0/22 (133.117.160.0 - 133.117.163.255)
133.117.172.0/22 (133.117.172.0 - 133.117.175.255)
133.123.0.0/20 (133.123.0.0 - 133.123.15.255)
133.125.0.0/24 (133.125.0.0 - 133.125.0.255)
133.130.0.0/17 (133.130.0.0 - 133.130.127.255)
133.130.32.0/23 (133.130.32.0 - 133.130.33.255)
133.130.64.0/24 (133.130.64.0 - 133.130.64.255)
133.130.128.0/24 (133.130.128.0 - 133.130.128.255) - Delegated Prefix
- 133.0.0.0/8 (133.0.0.0 - 133.255.255.255)
These results are partial. Additional registration records were omitted.
| Announced Prefix | Relationship | Origin ASN | Description | Country | First Address | Last Address |
|---|---|---|---|---|---|---|
| 133.1.0.0/16 | More specific | AS4730 | Osaka University |
Japan (JP)
|
133.1.0.0 | 133.1.255.255 |
| 133.2.0.0/16 | More specific | AS17523 | Aoyama Gakuin University |
Japan (JP)
|
133.2.0.0 | 133.2.255.255 |
| 133.3.0.0/16 | More specific | AS2504 | Kyoto University |
Japan (JP)
|
133.3.0.0 | 133.3.255.255 |
| 133.4.0.0/18 | More specific | AS55384 | Japan Advanced Institute of Science and Technology |
Japan (JP)
|
133.4.0.0 | 133.4.63.255 |
| 133.4.128.0/18 | More specific | AS2500 | WIDE Project |
Japan (JP)
|
133.4.128.0 | 133.4.191.255 |
| 133.5.0.0/16 | More specific | AS2508 | Kyushu University |
Japan (JP)
|
133.5.0.0 | 133.5.255.255 |
| 133.6.0.0/16 | More specific | AS17687 | National University Corporation Nagoya University |
Japan (JP)
|
133.6.0.0 | 133.6.255.255 |
| 133.7.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.7.0.0 | 133.7.255.255 |
| 133.8.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.8.0.0 | 133.8.255.255 |
| 133.9.0.0/16 | More specific | AS17956 | WASEDA University |
Japan (JP)
|
133.9.0.0 | 133.9.255.255 |
| 133.10.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.10.0.0 | 133.10.255.255 |
| 133.11.0.0/16 | More specific | AS2501 | The University of Tokyo |
Japan (JP)
|
133.11.0.0 | 133.11.255.255 |
| 133.12.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.12.0.0 | 133.12.255.255 |
| 133.13.0.0/16 | More specific | AS17960 | University of the Ryukyus |
Japan (JP)
|
133.13.0.0 | 133.13.255.255 |
| 133.14.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.14.0.0 | 133.15.255.255 |
| 133.16.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.16.0.0 | 133.17.255.255 |
| 133.18.0.0/16 | More specific | AS24282 | KAGOYA JAPAN Inc. |
Japan (JP)
|
133.18.0.0 | 133.18.255.255 |
| 133.19.0.0/16 | More specific | AS23807 | Ritsumeikan University |
Japan (JP)
|
133.19.0.0 | 133.19.255.255 |
| 133.20.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.20.0.0 | 133.21.255.255 |
| 133.23.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.23.0.0 | 133.23.255.255 |
| 133.24.0.0/16 | More specific | AS131159 | Yamagata University |
Japan (JP)
|
133.24.0.0 | 133.24.255.255 |
| 133.25.0.0/16 | More specific | AS55379 | Hosei University |
Japan (JP)
|
133.25.0.0 | 133.25.255.255 |
| 133.26.0.0/16 | More specific | AS131919 | Meiji University |
Japan (JP)
|
133.26.0.0 | 133.26.255.255 |
| 133.27.0.0/16 | More specific | AS38635 | Keio University |
Japan (JP)
|
133.27.0.0 | 133.27.255.255 |
| 133.28.0.0/16 | More specific | AS55380 | Kanazawa University |
Japan (JP)
|
133.28.0.0 | 133.28.255.255 |
| 133.29.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.29.0.0 | 133.29.255.255 |
| 133.30.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.30.0.0 | 133.30.255.255 |
| 133.31.0.0/16 | More specific | AS55390 | Tokyo University of Science |
Japan (JP)
|
133.31.0.0 | 133.31.255.255 |
| 133.32.0.0/18 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.0.0 | 133.32.63.255 |
| 133.32.72.0/21 | More specific | AS131918 | SHONAN CABLE NETWORK |
Japan (JP)
|
133.32.72.0 | 133.32.79.255 |
| 133.32.80.0/20 | More specific | AS131918 | SHONAN CABLE NETWORK |
Japan (JP)
|
133.32.80.0 | 133.32.95.255 |
| 133.32.100.0/22 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.32.100.0 | 133.32.103.255 |
| 133.32.104.0/22 | More specific | AS131986 | ITOCHU Cable Systems Corp. |
Japan (JP)
|
133.32.104.0 | 133.32.107.255 |
| 133.32.108.0/23 | More specific | AS131986 | ITOCHU Cable Systems Corp. |
Japan (JP)
|
133.32.108.0 | 133.32.109.255 |
| 133.32.112.0/20 | More specific | AS23630 | CAC Inc. |
Japan (JP)
|
133.32.112.0 | 133.32.127.255 |
| 133.32.128.0/20 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.128.0 | 133.32.143.255 |
| 133.32.152.0/21 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.152.0 | 133.32.159.255 |
| 133.32.164.0/22 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.164.0 | 133.32.167.255 |
| 133.32.172.0/22 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.172.0 | 133.32.175.255 |
| 133.32.176.0/20 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.176.0 | 133.32.191.255 |
| 133.32.192.0/21 | More specific | AS131958 | Tama Cable Network Co. Ltd. |
Japan (JP)
|
133.32.192.0 | 133.32.199.255 |
| 133.32.208.0/20 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.208.0 | 133.32.223.255 |
| 133.32.224.0/19 | More specific | AS2519 | ARTERIA Networks Corporation |
Japan (JP)
|
133.32.224.0 | 133.32.255.255 |
| 133.33.0.0/16 | More specific | AS23615 | University of Shizuoka |
Japan (JP)
|
133.33.0.0 | 133.33.255.255 |
| 133.34.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.34.0.0 | 133.35.255.255 |
| 133.36.0.0/16 | More specific | AS131981 | Takushoku University |
Japan (JP)
|
133.36.0.0 | 133.36.255.255 |
| 133.37.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.37.0.0 | 133.37.255.255 |
| 133.38.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.38.0.0 | 133.39.255.255 |
| 133.40.0.0/16 | More specific | AS63777 | National Institutes of Natural Sciences National Astronomical Observatory of JAPAN |
Japan (JP)
|
133.40.0.0 | 133.40.255.255 |
| 133.41.0.0/16 | More specific | AS2506 | NTT business Solutions corporation |
Japan (JP)
|
133.41.0.0 | 133.41.255.255 |
| 133.42.0.0/16 | More specific | AS24248 | Wakayama University |
Japan (JP)
|
133.42.0.0 | 133.42.255.255 |
| 133.43.0.0/16 | More specific | AS10014 | Nihon University |
Japan (JP)
|
133.43.0.0 | 133.43.255.255 |
| 133.44.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.44.0.0 | 133.45.255.255 |
| 133.46.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.46.0.0 | 133.46.255.255 |
| 133.47.0.0/16 | More specific | AS17687 | National University Corporation Nagoya University |
Japan (JP)
|
133.47.0.0 | 133.47.255.255 |
| 133.48.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.48.0.0 | 133.49.255.255 |
| 133.50.0.0/16 | More specific | AS7509 | Hokkaido University |
Japan (JP)
|
133.50.0.0 | 133.50.255.255 |
| 133.51.0.0/16 | More specific | AS37917 | University of Tsukuba |
Japan (JP)
|
133.51.0.0 | 133.51.255.255 |
| 133.52.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.52.0.0 | 133.52.255.255 |
| 133.53.0.0/16 | More specific | AS4729 | Japan Atomic Energy Agency |
Japan (JP)
|
133.53.0.0 | 133.53.255.255 |
| 133.54.0.0/18 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.54.0.0 | 133.54.63.255 |
| 133.54.64.0/21 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.54.64.0 | 133.54.71.255 |
| 133.54.76.0/22 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.54.76.0 | 133.54.79.255 |
| 133.54.80.0/20 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.54.80.0 | 133.54.95.255 |
| 133.54.96.0/19 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.54.96.0 | 133.54.127.255 |
| 133.54.128.0/17 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.54.128.0 | 133.54.255.255 |
| 133.55.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.55.0.0 | 133.55.255.255 |
| 133.56.0.0/16 | More specific | AS3488 | Japan Aerospace Exploration Agency |
Japan (JP)
|
133.56.0.0 | 133.56.255.255 |
| 133.57.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.57.0.0 | 133.57.255.255 |
| 133.58.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.58.0.0 | 133.58.255.255 |
| 133.60.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.60.0.0 | 133.60.255.255 |
| 133.62.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.62.0.0 | 133.63.255.255 |
| 133.64.0.0/16 | More specific | AS38641 | Osaka Sangyo University |
Japan (JP)
|
133.64.0.0 | 133.64.255.255 |
| 133.65.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.65.0.0 | 133.65.255.255 |
| 133.66.0.0/16 | More specific | AS17946 | Gifu University |
Japan (JP)
|
133.66.0.0 | 133.66.255.255 |
| 133.67.0.0/16 | More specific | AS24261 | Mie University |
Japan (JP)
|
133.67.0.0 | 133.67.255.255 |
| 133.68.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.68.0.0 | 133.68.255.255 |
| 133.69.0.0/16 | More specific | AS2523 | Internet Technology Research Consortium |
Japan (JP)
|
133.69.0.0 | 133.69.255.255 |
| 133.69.160.0/22 | More specific | AS45688 | The University of Tokyo Interfaculty Initiative in Information Studies |
Japan (JP)
|
133.69.160.0 | 133.69.163.255 |
| 133.69.168.0/21 | More specific | AS45688 | The University of Tokyo Interfaculty Initiative in Information Studies |
Japan (JP)
|
133.69.168.0 | 133.69.175.255 |
| 133.69.176.0/24 | More specific | AS45688 | The University of Tokyo Interfaculty Initiative in Information Studies |
Japan (JP)
|
133.69.176.0 | 133.69.176.255 |
| 133.69.184.0/24 | More specific | AS45688 | The University of Tokyo Interfaculty Initiative in Information Studies |
Japan (JP)
|
133.69.184.0 | 133.69.184.255 |
| 133.70.0.0/16 | More specific | AS24268 | National University Corporation Shizuoka University |
Japan (JP)
|
133.70.0.0 | 133.70.255.255 |
| 133.71.0.0/16 | More specific | AS131897 | National University Corporation Ehime University |
Japan (JP)
|
133.71.0.0 | 133.71.255.255 |
| 133.72.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.72.0.0 | 133.73.255.255 |
| 133.74.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.74.0.0 | 133.74.255.255 |
| 133.74.0.0/17 | More specific | AS3488 | Japan Aerospace Exploration Agency |
Japan (JP)
|
133.74.0.0 | 133.74.127.255 |
| 133.74.128.0/18 | More specific | AS3488 | Japan Aerospace Exploration Agency |
Japan (JP)
|
133.74.128.0 | 133.74.191.255 |
| 133.75.0.0/16 | More specific | AS9591 | National Institute for Fusion Science |
Japan (JP)
|
133.75.0.0 | 133.75.255.255 |
| 133.77.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.77.0.0 | 133.77.255.255 |
| 133.78.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.78.0.0 | 133.78.255.255 |
| 133.79.0.0/16 | More specific | AS18087 | Toyo University |
Japan (JP)
|
133.79.0.0 | 133.79.255.255 |
| 133.80.0.0/16 | More specific | AS55904 | KOGAKUIN University |
Japan (JP)
|
133.80.0.0 | 133.80.255.255 |
| 133.81.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.81.0.0 | 133.81.255.255 |
| 133.82.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.82.0.0 | 133.83.255.255 |
| 133.84.0.0/15 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.84.0.0 | 133.85.255.255 |
| 133.86.0.0/16 | More specific | AS2907 | Research Organization of Information and Systems National Institute of Informatics |
Japan (JP)
|
133.86.0.0 | 133.86.255.255 |
| 133.87.0.0/16 | More specific | AS7509 | Hokkaido University |
Japan (JP)
|
133.87.0.0 | 133.87.255.255 |
| 133.88.0.0/20 | More specific | AS18068 | Dream Wave Shizuoka Co. Ltd. |
Japan (JP)
|
133.88.0.0 | 133.88.15.255 |
| 133.88.16.0/22 | More specific | AS18068 | Dream Wave Shizuoka Co. Ltd. |
Japan (JP)
|
133.88.16.0 | 133.88.19.255 |
Showing the first 100 announced prefixes. Additional more-specific announcements were omitted.