| Prefix | Company | Number of IPs |
|---|---|---|
| 103.164.74.0/23 | Yokohama City Board of Education | 512 |
| 103.164.166.0/23 | Shiga Prefectural Government | 512 |
| 103.164.168.0/23 | Kashiwa city | 512 |
| 103.180.128.0/23 | Chiba prefecture | 512 |
| 130.34.0.0/16 | Tohoku University | 65,536 |
| 130.153.0.0/16 | The University of Electro-Communications | 65,536 |
| 131.206.0.0/16 | Office of Operating Information Infrastructure | 65,536 |
| 133.7.0.0/16 | University Of Fukui | 65,536 |
| 133.8.0.0/16 | Gunma University | 65,536 |
| 133.10.0.0/16 | Tokyo Metropolitan University (Tokyo Metropolitan Institute of Technology) | 65,536 |
| 133.12.0.0/16 | Sophia University | 65,536 |
| 133.14.0.0/16 | School of Science and Engineering, Tokyo Denki University | 65,536 |
| 133.15.0.0/16 | Toyohashi University of Technology | 65,536 |
| 133.16.0.0/16 | Kyoto Institute of Technology | 65,536 |
| 133.17.0.0/16 | Kyushu Sangyo University | 65,536 |
| 133.17.7.0/24 | Kyushu Sangyo University | 256 |
| 133.17.10.0/24 | Kyushu Sangyo University | 256 |
| 133.20.0.0/16 | School of Engineering, Tokyo Denki University | 65,536 |
| 133.21.0.0/16 | Toyota Technological Institute | 65,536 |
| 133.23.0.0/16 | University of Yamanashi | 65,536 |
| 133.29.0.0/16 | Nanzan University | 65,536 |
| 133.30.0.0/16 | Kobe University | 65,536 |
| 133.32.100.0/22 | Kobe Design University | 1,024 |
| 133.34.0.0/16 | Yokohama National University | 65,536 |
| 133.35.0.0/16 | Niigata University | 65,536 |
| 133.37.0.0/16 | Oita University | 65,536 |
| 133.38.0.0/16 | Saitama University | 65,536 |
| 133.39.0.0/16 | National Institute of Genetics | 65,536 |
| 133.44.0.0/16 | Nagaoka University of Technology | 65,536 |
| 133.45.0.0/16 | National University Corporation, Nagasaki University | 65,536 |
| 133.46.0.0/16 | Hitotsubashi University | 65,536 |
| 133.46.248.0/21 | Hitotsubashi University | 2,048 |
| 133.48.0.0/16 | National Institutes of Natural Sciences | 65,536 |
| 133.49.0.0/16 | Saga University | 65,536 |
| 133.52.0.0/16 | Fukushima University | 65,536 |
| 133.54.0.0/18 | University of Miyazaki | 16,384 |
| 133.54.64.0/21 | University of Miyazaki | 2,048 |
| 133.54.76.0/24 | University of Miyazaki | 256 |
| 133.54.77.0/24 | University of Miyazaki | 256 |
| 133.54.78.0/23 | University of Miyazaki | 512 |
| 133.54.80.0/20 | University of Miyazaki | 4,096 |
| 133.54.96.0/19 | University of Miyazaki | 8,192 |
| 133.54.128.0/17 | University of Miyazaki | 32,768 |
| 133.55.0.0/16 | Toyama Prefectural University | 65,536 |
| 133.57.0.0/16 | National Institute of Polar Research | 65,536 |
| 133.58.0.0/16 | The Institute of Statistical Mathematics | 65,536 |
| 133.60.0.0/16 | Hirosaki University | 65,536 |
| 133.62.0.0/16 | Yamaguchi University | 65,536 |
| 133.63.0.0/16 | National Institutes for Quantum and Radiological Science and Technology | 65,536 |
| 133.65.0.0/16 | National University Corporation Ochanomizu University | 65,536 |
| 133.68.0.0/16 | Nagoya Institute of Technology | 65,536 |
| 133.72.0.0/16 | Kanagawa University | 65,536 |
| 133.73.0.0/16 | Musashino Art University | 65,536 |
| 133.74.0.0/16 | Institute of Space and Astronautical Science, | 65,536 |
| 133.74.192.0/18 | Institute of Space and Astronautical Science, | 16,384 |
| 133.77.0.0/16 | University of Hyogo | 65,536 |
| 133.78.0.0/16 | Tokyo City University | 65,536 |
| 133.81.0.0/16 | University of Teacher Education Fukuoka | 65,536 |
| 133.82.0.0/16 | Chiba University | 65,536 |
| 133.83.0.0/16 | Ryukoku University | 65,536 |
| 133.84.0.0/16 | Ryukoku University | 65,536 |
| 133.85.0.0/16 | National Institute of Technology, Japan | 65,536 |
| 133.86.0.0/16 | Tokyo Metropolitan University of Tokyo Metropolitan Public University Corporation | 65,536 |
| 133.86.207.0/24 | Tokyo Metropolitan University of Tokyo Metropolitan Public University Corporation | 256 |
| 133.86.208.0/24 | Tokyo Metropolitan University of Tokyo Metropolitan Public University Corporation | 256 |
| 133.86.246.0/24 | Tokyo Metropolitan University of Tokyo Metropolitan Public University Corporation | 256 |
| 133.86.247.0/24 | Tokyo Metropolitan University of Tokyo Metropolitan Public University Corporation | 256 |
| 133.86.248.0/24 | Tokyo Metropolitan University of Tokyo Metropolitan Public University Corporation | 256 |
| 133.86.250.0/24 | Tokyo Metropolitan University of Tokyo Metropolitan Public University Corporation | 256 |
| 133.88.224.0/24 | Shizuoka Institute of Science and Technology | 256 |
| 133.88.225.0/24 | Shizuoka Institute of Science and Technology | 256 |
| 133.88.226.0/24 | Shizuoka Institute of Science and Technology | 256 |
| 133.89.0.0/16 | Osaka Electro-Communication University | 65,536 |
| 133.89.0.0/17 | Osaka Electro-Communication University | 32,768 |
| 133.89.128.0/17 | Osaka Electro-Communication University | 32,768 |
| 133.94.0.0/16 | Kurume Institute of Technology | 65,536 |
| 133.95.0.0/16 | Kumamoto University | 65,536 |
| 133.96.0.0/16 | Aichi University of Education | 65,536 |
| 133.98.0.0/16 | Hachinohe Institute of Technology | 65,536 |
| 133.99.0.0/16 | Tsuda University | 65,536 |
| 133.102.0.0/16 | Shiga University | 65,536 |
| 133.103.0.0/16 | Genome Research Network | 65,536 |
| 133.104.0.0/16 | National Institute of Technology, Japan | 65,536 |
| 133.106.0.0/21 | Ashikaga University | 2,048 |
| 133.187.0.0/16 | Central Research Institute of Electric Power Industry | 65,536 |
| 133.220.0.0/16 | School Juridical Person Seikei Gakuen | 65,536 |
| 134.160.186.0/24 | RIKEN | 256 |
| 134.160.187.0/24 | RIKEN | 256 |
| 134.160.188.0/24 | RIKEN | 256 |
| 134.160.189.0/24 | RIKEN | 256 |
| 136.187.0.0/16 | National Institute of Informatics | 65,536 |
| 144.213.0.0/16 | National Institute for Materials Science | 65,536 |
| 147.157.0.0/17 | Tsukuba College of Technology | 32,768 |
| 147.157.85.0/24 | Tsukuba College of Technology | 256 |
| 147.157.128.0/17 | Tsukuba College of Technology | 32,768 |
| 150.7.0.0/16 | Tokai University | 65,536 |
| 150.7.28.0/24 | Tokai University | 256 |
| 150.7.250.0/24 | Tokai University | 256 |
| 150.9.254.0/23 | Hannan University | 512 |
| 150.12.0.0/16 | 65,536 | |
| 2001:2f8::/32 | National Institute of Informatics | 7.92 × 1028 |
| 2405:d200::/32 | Chikushi Jogakuen University | 7.92 × 1028 |
This table only shows the first 100 of the set of IPv4 and IPv6 prefixes. All data is available via our IP data API.
IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.
AS2907 peers with these other Autonomous Systems.
Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.
AS2907 uses these Autonomous Systems as its upstreams.
An upstream (or transit provider) is another AS that AS2907 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.
AS2907 provides internet connectivity to these downstream Autonomous Systems.
A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.
Discover your public IP address and detailed information about your connection.
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