Autonomous System

AS2497

Internet Initiative Japan Inc.

Internet Initiative Japan Inc. Japan 🌐 iij.ad.jp

Announced IPs

3,938,560

CIDR prefixes

181

ASN

AS2497

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.

70/100

Moderate

How this score is built

Baseline (neutral) 65
Isp allocation +5
Trust score 70 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

About Internet Initiative Japan

Internet Initiative Japan, Inc. (インターネットイニシアティブ) is a Japanese telecommunications company.

Founded

1992

Headquarters

Tokyo

Official website ↗ Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

Network profile

Source: PeeringDB →

Network type NSP

Geographic scope Global

Traffic ratio Balanced

Peering policy Restrictive

IRR record JPIRR::AS-IIJ JPIRR::AS-IIJ6

Present at 15 internet exchanges: Equinix Ashburn, Equinix Los Angeles, Equinix San Jose, Equinix New York, NYIIX New York, DIX-IE, JPNAP Osaka, LINX LON1: Main, SIX Seattle: MTU 1500, Equinix Singapore, …

Website ↗

AS2497 — global IP footprint

Cities where AS2497 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
133.110.0.0/15	131.1K	45.1%	Internet Initiative Japan Inc.	JP	Fukuoka	Yukuhashi
172.122.0.0/15	131.1K	98.5%	Internet Initiative Japan Inc.	JP	Kanagawa	Yokohama
121.102.0.0/16	65.5K	90.1%	Internet Initiative Japan Inc.	JP	Kyoto	Kyoto
125.30.0.0/16	65.5K	86.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
129.249.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
131.248.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
132.179.0.0/16	65.5K	0.2%	Internet Initiative Japan Inc.	JP	—	—
133.127.0.0/16	65.5K	85.5%	Internet Initiative Japan Inc.	JP	Tokyo	Matsubara
133.137.0.0/16	65.5K	35.7%	Internet Initiative Japan Inc.	JP	—	—
133.142.0.0/16	65.5K	79.9%	Internet Initiative Japan Inc.	JP	Shizuoka	Shizuoka
133.159.0.0/16	65.5K	89.3%	Internet Initiative Japan Inc.	JP	Aichi	Toyota
133.173.0.0/16	65.5K	0.3%	Internet Initiative Japan Inc.	JP	—	—
133.215.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
133.218.0.0/16	65.5K	71.9%	Internet Initiative Japan Inc.	JP	Saitama	Motobuto
133.221.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
133.236.0.0/16	65.5K	49.2%	Internet Initiative Japan Inc.	JP	Fukuoka	Muromi
133.245.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
133.254.0.0/16	65.5K	0.1%	Internet Initiative Japan Inc.	JP	Shizuoka	Shizuoka
134.237.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
138.107.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
139.152.0.0/16	65.5K	0.2%	Internet Initiative Japan Inc.	JP	—	—
143.94.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
150.23.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
150.31.0.0/16	65.5K	79.7%	Internet Initiative Japan Inc.	JP	Hyōgo	Amagasaki
150.87.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
150.90.0.0/16	65.5K	0.7%	Internet Initiative Japan Inc.	JP	Saitama	Fujimino-shi
157.67.0.0/16	65.5K	92.2%	Internet Initiative Japan Inc.	JP	Tokyo	Nishiogikita
160.13.0.0/16	65.5K	66.3%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
160.17.0.0/16	65.5K	4.3%	Internet Initiative Japan Inc.	JP	—	—
163.49.0.0/16	65.5K	73.2%	Internet Initiative Japan Inc.	JP	Kanagawa	Kawasaki
163.55.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	—	—
163.140.0.0/16	65.5K	95.9%	Internet Initiative Japan Inc.	JP	Fukuoka	Izumo
163.218.0.0/16	65.5K	98.6%	Internet Initiative Japan Inc.	JP	Nagasaki	Nagasaki
167.169.0.0/16	65.5K	0.0%	Internet Initiative Japan Inc.	JP	Saitama	Miyaharachō
202.32.0.0/16	65.5K	37.7%	Internet Initiative Japan Inc.	JP	Tokyo	Shinjuku
202.214.0.0/16	65.5K	34.8%	Internet Initiative Japan Inc.	JP	Hyōgo	Kakogawa
202.221.0.0/16	65.5K	23.9%	Internet Initiative Japan Inc.	JP	Shizuoka	Yaizu
202.232.0.0/16	65.5K	36.2%	Internet Initiative Japan Inc.	JP	Shizuoka	Hamamatsu
203.180.0.0/16	65.5K	57.9%	Internet Initiative Japan Inc.	JP	Aichi	Toyota
210.128.0.0/16	65.5K	46.4%	Internet Initiative Japan Inc.	JP	Osaka	Chūō Ku
210.138.0.0/16	65.5K	54.8%	Internet Initiative Japan Inc.	JP	Saitama	Kawagoe
210.149.0.0/16	65.5K	68.1%	Internet Initiative Japan Inc.	JP	Mie	Yokkaichi
219.119.0.0/16	65.5K	98.2%	Internet Initiative Japan Inc.	JP	—	—
58.138.0.0/17	32.8K	57.5%	Internet Initiative Japan Inc.	JP	Saitama	Negishi
101.128.128.0/17	32.8K	97.5%	Internet Initiative Japan Inc.	JP	Hiroshima	Mukainadashimmachi
113.197.128.0/17	32.8K	99.2%	Internet Initiative Japan Inc.	JP	Osaka	Asahi Ku
118.151.0.0/17	32.8K	99.2%	Internet Initiative Japan Inc.	JP	Gunma	Ōta
124.41.0.0/17	32.8K	99.3%	Internet Initiative Japan Inc.	JP	Chiba	Matsudo
133.159.128.0/17	32.8K	0.0%	Internet Initiative Japan Inc.	JP	Nagasaki	Nagasaki
133.194.0.0/17	32.8K	0.0%	Internet Initiative Japan Inc.	JP	—	—
133.238.128.0/17	32.8K	78.8%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
143.125.0.0/17	32.8K	0.0%	Internet Initiative Japan Inc.	JP	—	—
202.32.0.0/17	32.8K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
202.232.128.0/17	32.8K	0.0%	Internet Initiative Japan Inc.	JP	Shizuoka	Fukuroi
202.238.128.0/17	32.8K	34.4%	Internet Initiative Japan Inc.	JP	Tokyo	Meguro City
210.128.0.0/17	32.8K	0.0%	Internet Initiative Japan Inc.	JP	Osaka	Chūō Ku
210.130.0.0/17	32.8K	86.0%	Internet Initiative Japan Inc.	JP	Saitama	Minaminakano
210.148.0.0/17	32.8K	40.0%	Internet Initiative Japan Inc.	JP	Yamagata	Sakata
219.111.0.0/17	32.8K	96.5%	Internet Initiative Japan Inc.	JP	Nagano	Ueda
219.126.128.0/17	32.8K	79.3%	Internet Initiative Japan Inc.	JP	Ibaraki	Moriya
220.100.0.0/17	32.8K	96.2%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
220.156.0.0/17	32.8K	46.0%	Internet Initiative Japan Inc.	JP	—	—
49.239.64.0/18	16.4K	96.6%	Internet Initiative Japan Inc.	JP	Kanagawa	Shimokodanaka
58.138.0.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	Saitama	Negishi
58.138.128.0/18	16.4K	31.8%	Internet Initiative Japan Inc.	JP	Chiba	Osaka
118.151.128.0/18	16.4K	73.6%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
119.10.192.0/18	16.4K	87.3%	Internet Initiative Japan Inc.	JP	Aichi	Nagoya
124.41.128.0/18	16.4K	99.7%	Internet Initiative Japan Inc.	JP	—	—
124.147.64.0/18	16.4K	98.9%	Internet Initiative Japan Inc.	JP	—	—
133.159.0.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	Aichi	Toyota
133.194.128.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	—	—
143.125.128.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	—	—
202.32.128.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	Chiba	Rokkōdai
202.224.128.0/18	16.4K	0.2%	Internet Initiative Japan Inc.	JP	—	—
202.232.64.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	Kanagawa	Tsuzuki Ku
203.180.64.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	Chiba	Nagareyama
203.180.128.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tōyō
210.130.64.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	—	—
210.130.128.0/18	16.4K	26.8%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
210.133.192.0/18	16.4K	44.2%	Internet Initiative Japan Inc.	JP	Saitama	Kawaguchi
210.138.192.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
210.148.192.0/18	16.4K	43.1%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
220.100.192.0/18	16.4K	51.0%	Internet Initiative Japan Inc.	JP	Tokyo	Roppongi
220.156.64.0/18	16.4K	0.0%	Internet Initiative Japan Inc.	JP	—	—
220.210.128.0/18	16.4K	99.8%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
61.124.0.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
61.211.96.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	—	—
133.157.32.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo
133.159.64.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Fukuoka	Nishijin
133.183.128.0/19	8.2K	0.1%	Internet Initiative Japan Inc.	JP	—	—
133.194.192.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	—	—
133.238.32.0/19	8.2K	98.6%	Internet Initiative Japan Inc.	JP	Osaka	Noe
202.32.224.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Shinjuku
202.232.32.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Fukuoka	Wada
202.251.0.0/19	8.2K	0.1%	Internet Initiative Japan Inc.	JP	—	—
203.139.224.0/19	8.2K	45.4%	Internet Initiative Japan Inc.	JP	—	—
203.180.32.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Chiba	Nagareyama
203.180.224.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Aichi	Toyota
210.128.128.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Arakawa
210.128.192.0/19	8.2K	0.0%	Internet Initiative Japan Inc.	JP	Tokyo	Tokyo

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS2497 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

Prefix	Announcement samples	Last seen
121.50.160.0/21	15,503	2026-09-10 18:07:38
202.22.208.0/20	15,148	2026-09-10 18:07:54
182.54.240.0/22	9,752	2026-09-10 18:07:54
202.15.44.0/23	9,677	2026-09-10 18:08:25
133.254.131.0/24	9,623	2026-09-10 18:08:25
133.254.130.0/24	9,617	2026-09-10 18:08:25
61.124.0.0/20	9,458	2026-09-10 18:08:25
103.140.136.0/23	9,426	2026-09-10 18:08:25
139.152.15.0/24	9,414	2026-09-10 18:08:25
133.183.96.0/21	9,412	2026-09-10 18:07:38
103.5.23.0/24	9,386	2026-09-10 18:07:54
139.152.13.0/24	9,385	2026-09-10 18:08:25
139.152.11.0/24	9,383	2026-09-10 18:08:25
133.194.254.0/24	9,366	2026-09-10 18:07:54
133.194.252.0/23	9,365	2026-09-10 18:07:54
133.183.106.0/24	9,361	2026-09-10 18:07:38
133.254.0.0/16	9,348	2026-09-10 18:07:54
133.194.248.0/22	9,347	2026-09-10 18:07:54
133.194.192.0/19	9,347	2026-09-10 18:07:54
131.248.0.0/16	9,343	2026-09-10 18:07:54
133.194.224.0/20	9,338	2026-09-10 18:07:54
133.194.240.0/21	9,336	2026-09-10 18:07:54
133.183.128.0/19	9,336	2026-09-10 18:08:25
139.152.0.0/16	9,336	2026-09-10 18:08:25
150.90.0.0/16	9,336	2026-09-10 18:08:25
139.152.14.0/24	9,320	2026-09-10 18:08:25
133.127.0.0/16	9,300	2026-09-10 18:07:54
133.194.0.0/17	9,292	2026-09-10 18:07:54
133.194.128.0/18	9,260	2026-09-10 18:07:32
160.17.0.0/16	9,256	2026-09-10 18:08:25
133.215.0.0/16	9,223	2026-09-10 18:08:25
61.122.224.0/20	9,221	2026-09-10 18:07:38
14.137.243.0/24	9,190	2026-09-10 18:08:25
150.23.0.0/16	9,176	2026-09-10 18:08:25
143.94.217.0/24	9,171	2026-09-10 18:07:38
133.173.128.0/17	9,164	2026-09-10 18:08:25
163.55.0.0/16	9,143	2026-09-10 18:07:54
133.173.0.0/16	9,090	2026-09-10 18:07:38
133.173.0.0/17	9,075	2026-09-10 18:07:38
202.19.224.0/21	9,015	2026-09-10 18:07:54
202.24.195.0/24	8,949	2026-09-10 18:07:54
202.250.155.0/24	8,912	2026-09-10 18:08:25
202.242.16.0/23	8,910	2026-09-10 18:07:38
210.141.16.0/20	8,907	2026-09-10 18:08:25
202.24.193.0/24	8,901	2026-09-10 18:07:54
202.24.194.0/24	8,886	2026-09-10 18:07:54
202.250.154.0/24	8,883	2026-09-10 18:08:25
202.24.196.0/24	8,881	2026-09-10 18:07:54
202.24.192.0/24	8,877	2026-09-10 18:07:54
202.245.176.0/20	8,839	2026-09-10 18:08:25

Showing top 50 of 225 announced prefixes by sample volume.

Frequently Asked Questions

What is AS2497?

AS2497 is an Autonomous System Number assigned to Internet Initiative Japan Inc.. 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 AS2497 announce?

AS2497 announces 3.94M IPv4 addresses distributed across 181 routed CIDR prefixes. The network is registered in Japan.

Who operates AS2497?

AS2497 is operated by Internet Initiative Japan Inc.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.

What country is AS2497 registered in?

AS2497 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-10 19:39:06 UTC