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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
8,769,536
CIDR prefixes
477
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 ↗

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 Fukuoka Tōnoharu
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
61.6%
Research Organization of Information and Systems, National Institute of Informatics JP Kanagawa Minamishitauramachi-kikuna
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
14.2%
Research Organization of Information and Systems, National Institute of Informatics JP Aichi Okazaki
133.62.0.0/15 131.1K
6.5%
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 Chiba Chiba
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 Ibaraki Moriya
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
13.4%
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 Minamimotomachi
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 Tokyo Ōta
133.52.0.0/16 65.5K
45.4%
Research Organization of Information and Systems, National Institute of Informatics JP Fukushima Fukushima
133.55.0.0/16 65.5K
37.8%
Research Organization of Information and Systems, National Institute of Informatics JP Toyama Toyama
133.57.0.0/16 65.5K
10.7%
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
4.1%
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
15.7%
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
6.1%
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 Kamakura
133.220.0.0/16 65.5K
0.1%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Koishikawa
136.187.0.0/16 65.5K
2.3%
Research Organization of Information and Systems, National Institute of Informatics JP Tokyo Taitō 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
0.2%
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 Higashirinkan
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 Kuzuhara
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
2.6%
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
92.8%
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 Osaka Osaka
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
1.9%
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 Saitama Chūō
157.76.0.0/16 65.5K
97.7%
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 Hitachi-Naka
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 Tokyo
157.111.0.0/16 65.5K
0.0%
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
5.1%
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 — —
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
8.0%
Research Organization of Information and Systems, National Institute of Informatics JP — —
160.194.0.0/16 65.5K
2.7%
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 Ashiya
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
14.4%
Research Organization of Information and Systems, National Institute of Informatics JP Osaka Higashiosaka
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
98.4%
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
4.6%
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 Ebina
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
0.3%
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 51,534 2026-11-13 18:39:53
133.37.0.0/16 51,083 2026-11-13 18:40:07
202.253.88.0/22 50,334 2026-11-13 18:40:07
160.238.51.0/24 44,317 2026-11-13 18:39:53
160.238.10.0/24 44,296 2026-11-13 18:39:53
160.238.40.0/24 44,271 2026-11-13 18:39:53
160.238.32.0/24 44,270 2026-11-13 18:39:53
160.238.3.0/24 44,267 2026-11-13 18:39:53
160.238.6.0/24 44,258 2026-11-13 18:39:53
160.238.4.0/24 44,254 2026-11-13 18:39:53
160.238.100.0/24 44,250 2026-11-13 18:39:53
160.238.9.0/24 44,232 2026-11-13 18:39:53
160.238.8.0/24 44,228 2026-11-13 18:39:53
160.238.1.0/24 44,223 2026-11-13 18:39:53
160.238.7.0/24 44,222 2026-11-13 18:39:53
160.238.62.0/24 44,215 2026-11-13 18:39:53
160.238.5.0/24 44,202 2026-11-13 18:39:53
160.238.56.0/24 44,195 2026-11-13 18:39:53
160.238.30.0/24 44,193 2026-11-13 18:39:53
160.238.20.0/24 44,146 2026-11-13 18:39:53
160.238.2.0/24 44,136 2026-11-13 18:39:53
202.34.192.0/20 36,352 2026-11-13 18:39:53
163.215.0.0/16 35,563 2026-11-13 18:39:53
202.26.144.0/20 28,473 2026-11-13 18:39:53
202.252.246.0/24 28,393 2026-11-13 18:39:53
202.11.138.0/24 28,383 2026-11-13 18:39:53
160.18.128.0/24 28,041 2026-11-13 18:39:53
163.47.2.0/23 27,902 2026-11-13 18:39:53
157.114.0.0/16 26,267 2026-11-13 18:39:53
202.19.104.0/23 25,701 2026-11-13 18:39:53
202.26.224.0/24 25,247 2026-11-13 18:39:53
133.85.0.0/16 24,661 2026-11-13 18:39:53
202.243.163.0/24 23,452 2026-11-13 18:39:53
202.26.248.0/23 23,444 2026-11-13 18:39:53
163.148.0.0/16 22,910 2026-11-13 18:39:53
163.143.0.0/16 22,438 2026-11-13 18:39:53
202.244.76.0/22 22,182 2026-11-13 18:39:53
202.25.86.0/23 21,902 2026-11-13 18:39:53
202.25.80.0/23 21,856 2026-11-13 18:39:53
133.220.0.0/16 20,883 2026-11-13 18:39:53
163.136.0.0/16 20,736 2026-11-13 18:39:53
160.18.220.0/23 20,420 2026-11-13 18:39:53
202.244.52.0/22 20,390 2026-11-13 18:39:53
202.237.168.0/23 20,020 2026-11-13 18:39:53
134.160.186.0/24 20,003 2026-11-13 18:39:53
134.160.187.0/24 19,900 2026-11-13 18:39:53
160.18.225.0/24 19,749 2026-11-13 18:39:53
160.237.0.0/18 19,736 2026-11-13 18:39:53
160.237.192.0/18 19,719 2026-11-13 18:39:53
134.160.188.0/24 19,697 2026-11-13 18:39:53

Showing top 50 of 767 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 477 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: 2026-11-13 18:54:05 UTC
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