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Autonomous System

AS2907

Research Organization of Information and Systems, National Institute of Informatics

Research Organization of Information and Systems, National Institute of Informatics Japan 🌐 sinet.ad.jp
Announced IPs
8,765,440
CIDR prefixes
476
ASN
AS2907

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

71/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Educational/Research
Geographic scope Asia Pacific
Traffic ratio Heavy Inbound
Peering policy Selective
IRR record JPIRR::AS2907:AS-SINET

Present at 7 internet exchanges: JPNAP Osaka, JPIX OSAKA, JPIX TOKYO, JPNAP Tokyo: Peering, BBIX Tokyo, BBIX Osaka, Equinix Tokyo

Website ↗

Web3 footprint

AS2907 hosts 1 observed decentralized-network node across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

IPFS IPFS 1

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
133.14.0.0/15 131.1K
17.2%
Research Organization of Information and Systems, National Institute of Informatics JP Aichi Toyohashi
133.16.0.0/15 131.1K
1.0%
Research Organization of Information and Systems, National Institute of Informatics JP Shiga Ōtsu
133.20.0.0/15 131.1K
3.2%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Nishisugamo
133.34.0.0/15 131.1K
61.7%
Research Organization of Information and Systems, National Institute of Informatics JP Niigata Hakusan'ura
133.38.0.0/15 131.1K
0.9%
Research Organization of Information and Systems, National Institute of Informatics JP Saitama Sakawa
133.44.0.0/15 131.1K
7.8%
Research Organization of Information and Systems, National Institute of Informatics JP Nagasaki Nagasaki
133.48.0.0/15 131.1K
14.1%
Research Organization of Information and Systems, National Institute of Informatics JP Aichi Okazaki
133.62.0.0/15 131.1K
6.4%
Research Organization of Information and Systems, National Institute of Informatics JP Yamaguchi Ube
133.72.0.0/15 131.1K
7.0%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Nakatehara
133.82.0.0/15 131.1K
0.6%
Research Organization of Information and Systems, National Institute of Informatics JP Kyoto Kyoto
133.84.0.0/15 131.1K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
133.94.0.0/15 131.1K
2.8%
Research Organization of Information and Systems, National Institute of Informatics JP Kumamoto Kumamoto
133.98.0.0/15 131.1K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Sumida City
133.102.0.0/15 131.1K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Shiga Maibara
150.42.0.0/15 131.1K
10.1%
Research Organization of Information and Systems, National Institute of Informatics JP Fukuoka Fukuoka
160.28.0.0/15 131.1K
13.3%
Research Organization of Information and Systems, National Institute of Informatics JP Iwate Morioka
163.214.0.0/15 131.1K
20.4%
Research Organization of Information and Systems, National Institute of Informatics JP Aichi Nagoya
130.34.0.0/16 65.5K
13.6%
Research Organization of Information and Systems, National Institute of Informatics JP Miyagi Sendai
130.153.0.0/16 65.5K
1.8%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Kokuryōchō
131.206.0.0/16 65.5K
3.2%
Research Organization of Information and Systems, National Institute of Informatics JP Fukuoka Iizuka
133.7.0.0/16 65.5K
0.8%
Research Organization of Information and Systems, National Institute of Informatics JP Fukui Asuwa
133.8.0.0/16 65.5K
0.6%
Research Organization of Information and Systems, National Institute of Informatics JP Gunma Takasaki
133.10.0.0/16 65.5K
0.3%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Onodai
133.12.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Meguro City
133.23.0.0/16 65.5K
1.0%
Research Organization of Information and Systems, National Institute of Informatics JP Yamanashi Kofu
133.29.0.0/16 65.5K
1.0%
Research Organization of Information and Systems, National Institute of Informatics JP Aichi Hara
133.30.0.0/16 65.5K
5.2%
Research Organization of Information and Systems, National Institute of Informatics JP Hyōgo Kobe
133.37.0.0/16 65.5K
10.6%
Research Organization of Information and Systems, National Institute of Informatics JP Oita Ōita
133.46.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Saitama Shikatebukuro
133.52.0.0/16 65.5K
45.2%
Research Organization of Information and Systems, National Institute of Informatics JP Fukushima Fukushima
133.55.0.0/16 65.5K
37.0%
Research Organization of Information and Systems, National Institute of Informatics JP Toyama Toyama
133.57.0.0/16 65.5K
10.6%
Research Organization of Information and Systems, National Institute of Informatics JP — —
133.58.0.0/16 65.5K
4.7%
Research Organization of Information and Systems, National Institute of Informatics JP — —
133.60.0.0/16 65.5K
4.0%
Research Organization of Information and Systems, National Institute of Informatics JP Aomori Hirosaki
133.65.0.0/16 65.5K
0.6%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Tokyo
133.68.0.0/16 65.5K
15.6%
Research Organization of Information and Systems, National Institute of Informatics JP Aichi Sannomaru
133.77.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
133.78.0.0/16 65.5K
6.0%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Ebara
133.81.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP Fukuoka Mugino
133.86.0.0/16 65.5K
1.3%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Suge
133.89.0.0/16 65.5K
10.2%
Research Organization of Information and Systems, National Institute of Informatics JP Osaka Neyagawa
133.96.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Aichi Kariya
133.104.0.0/16 65.5K
0.9%
Research Organization of Information and Systems, National Institute of Informatics JP — —
133.187.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Yokosuka
133.220.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Fujimichō
136.187.0.0/16 65.5K
2.3%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo tabashi City
144.213.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP Ibaraki Tsukuba
147.157.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP Ibaraki Tsukuba
150.7.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Ebina
150.12.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Hyōgo Nishinomiya
150.15.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
150.46.0.0/16 65.5K
1.6%
Research Organization of Information and Systems, National Institute of Informatics JP Okayama Okayama
150.54.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
150.59.0.0/16 65.5K
7.1%
Research Organization of Information and Systems, National Institute of Informatics JP Tokushima Tokushima
150.69.0.0/16 65.5K
5.3%
Research Organization of Information and Systems, National Institute of Informatics JP Fukuoka Kitakyushu
150.83.0.0/16 65.5K
1.9%
Research Organization of Information and Systems, National Institute of Informatics JP Hokkaido Sapporo
150.84.0.0/16 65.5K
2.7%
Research Organization of Information and Systems, National Institute of Informatics JP Hyōgo Kobe
150.86.0.0/16 65.5K
0.3%
Research Organization of Information and Systems, National Institute of Informatics JP Osaka Daido
150.89.0.0/16 65.5K
93.3%
Research Organization of Information and Systems, National Institute of Informatics JP Osaka Ōmiya
150.97.0.0/16 65.5K
0.4%
Research Organization of Information and Systems, National Institute of Informatics JP Hokkaido Kitami
150.99.0.0/16 65.5K
10.3%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Setagaya City
150.100.0.0/16 65.5K
0.4%
Research Organization of Information and Systems, National Institute of Informatics JP — —
157.1.0.0/16 65.5K
0.4%
Research Organization of Information and Systems, National Institute of Informatics JP — —
157.6.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP — —
157.13.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP Fukuoka Iizuka
157.16.0.0/16 65.5K
2.3%
Research Organization of Information and Systems, National Institute of Informatics JP — —
157.19.0.0/16 65.5K
0.3%
Research Organization of Information and Systems, National Institute of Informatics JP Hokkaido Muroran
157.63.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Adachi City
157.76.0.0/16 65.5K
97.8%
Research Organization of Information and Systems, National Institute of Informatics JP — —
157.80.0.0/16 65.5K
1.0%
Research Organization of Information and Systems, National Institute of Informatics JP Ibaraki Kujichō
157.102.0.0/16 65.5K
1.8%
Research Organization of Information and Systems, National Institute of Informatics JP — —
157.105.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Higashiyamato
157.111.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP — —
157.114.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
158.203.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP — —
158.208.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP Hokkaido Obihiro
158.210.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Ibaraki Tsukuba
158.215.0.0/16 65.5K
5.0%
Research Organization of Information and Systems, National Institute of Informatics JP Akita Akita
160.11.0.0/16 65.5K
0.9%
Research Organization of Information and Systems, National Institute of Informatics JP Shiga Moriyama
160.12.0.0/16 65.5K
0.9%
Research Organization of Information and Systems, National Institute of Informatics JP Tochigi Utsunomiya
160.15.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Tottori Yonago
160.190.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Chuo
160.193.0.0/16 65.5K
8.3%
Research Organization of Information and Systems, National Institute of Informatics JP Osaka Oriono
160.194.0.0/16 65.5K
2.6%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Tama
160.198.0.0/16 65.5K
25.4%
Research Organization of Information and Systems, National Institute of Informatics JP Fukuoka Kitakyushu
160.204.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
160.247.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Hyōgo Kobe
160.252.0.0/16 65.5K
0.3%
Research Organization of Information and Systems, National Institute of Informatics JP Nagano Matsumoto
163.42.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP — —
163.51.0.0/16 65.5K
14.3%
Research Organization of Information and Systems, National Institute of Informatics JP Osaka Sakai
163.54.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
163.130.0.0/16 65.5K
97.8%
Research Organization of Information and Systems, National Institute of Informatics JP Hokkaido Sapporo
163.134.0.0/16 65.5K
0.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
163.136.0.0/16 65.5K
0.2%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Shiraitodai
163.143.0.0/16 65.5K
4.7%
Research Organization of Information and Systems, National Institute of Informatics JP Fukushima Aizu-wakamatsu Shi
163.145.0.0/16 65.5K
0.6%
Research Organization of Information and Systems, National Institute of Informatics JP Hiroshima Fukuyama
163.148.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Yokosuka
163.209.0.0/16 65.5K
0.7%
Research Organization of Information and Systems, National Institute of Informatics JP Kagoshima Kagoshima
163.212.0.0/16 65.5K
0.3%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Yokohama
163.225.0.0/16 65.5K
0.4%
Research Organization of Information and Systems, National Institute of Informatics JP Hyōgo Kasai Shi

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS2907 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
202.250.238.0/23 50,411 2026-10-27 08:42:30
133.37.0.0/16 49,572 2026-10-27 08:42:30
202.253.88.0/22 48,860 2026-10-27 08:42:30
160.238.51.0/24 43,178 2026-10-27 08:42:30
160.238.10.0/24 43,156 2026-10-27 08:42:30
160.238.32.0/24 43,152 2026-10-27 08:42:30
160.238.40.0/24 43,148 2026-10-27 08:42:30
160.238.3.0/24 43,145 2026-10-27 08:42:30
160.238.4.0/24 43,137 2026-10-27 08:42:30
160.238.6.0/24 43,135 2026-10-27 08:42:30
160.238.100.0/24 43,133 2026-10-27 08:42:30
160.238.9.0/24 43,118 2026-10-27 08:42:30
160.238.8.0/24 43,108 2026-10-27 08:42:30
160.238.1.0/24 43,106 2026-10-27 08:42:30
160.238.7.0/24 43,101 2026-10-27 08:42:30
160.238.62.0/24 43,095 2026-10-27 08:42:30
160.238.56.0/24 43,085 2026-10-27 08:42:30
160.238.5.0/24 43,082 2026-10-27 08:42:30
160.238.30.0/24 43,077 2026-10-27 08:42:30
160.238.20.0/24 43,032 2026-10-27 08:42:30
160.238.2.0/24 43,018 2026-10-27 08:42:30
202.34.192.0/20 33,765 2026-10-27 08:42:30
163.215.0.0/16 31,343 2026-10-27 08:42:30
202.252.246.0/24 27,303 2026-10-27 08:42:30
202.26.144.0/20 25,440 2026-10-27 08:42:30
202.11.138.0/24 25,372 2026-10-27 08:42:30
163.47.2.0/23 24,662 2026-10-27 08:42:30
157.114.0.0/16 23,246 2026-10-27 08:42:30
160.18.128.0/24 22,579 2026-10-27 08:42:30
133.85.0.0/16 21,840 2026-10-27 08:42:30
202.25.86.0/23 20,817 2026-10-27 08:42:30
202.26.224.0/24 20,759 2026-10-27 08:42:30
202.25.80.0/23 20,749 2026-10-27 08:42:30
202.243.163.0/24 20,666 2026-10-27 08:42:30
133.220.0.0/16 19,770 2026-10-27 08:42:30
163.136.0.0/16 19,617 2026-10-27 08:42:30
202.244.52.0/22 19,286 2026-10-27 08:42:30
202.244.76.0/22 19,230 2026-10-27 08:42:30
134.160.186.0/24 18,785 2026-10-27 08:42:30
134.160.187.0/24 18,687 2026-10-27 08:42:30
160.237.0.0/18 18,594 2026-10-27 08:42:30
160.237.192.0/18 18,593 2026-10-27 08:42:30
134.160.188.0/24 18,553 2026-10-27 08:42:30
202.16.122.0/23 18,354 2026-10-27 08:42:30
163.148.0.0/16 18,103 2026-10-27 08:42:30
202.16.128.0/20 17,750 2026-10-27 08:42:30
202.236.128.0/20 17,590 2026-10-27 08:42:30
202.17.120.0/23 17,579 2026-10-27 08:42:30
163.130.0.0/16 17,569 2026-10-27 08:42:30
202.13.16.0/21 17,510 2026-10-27 08:42:30

Showing top 50 of 669 announced prefixes by sample volume.

Frequently Asked Questions

What is AS2907?

AS2907 is an Autonomous System Number assigned to Research Organization of Information and Systems, National Institute of Informatics. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS2907 announce?

AS2907 announces 8.77M IPv4 addresses distributed across 476 routed CIDR prefixes. The network is registered in Japan.

Who operates AS2907?

AS2907 is operated by Research Organization of Information and Systems, National Institute of Informatics. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.

What country is AS2907 registered in?

AS2907 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-27 08:39:05 UTC
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