Autonomous system
AS2497 IIJ - Internet Initiative Japan Inc.
Unclassified DROP-listed space APNIC
Summary
Internet Initiative Japan (IIJ)
transit legacy
IIJ is Internet Initiative Japan Inc., one of Japan's oldest and largest internet service providers and transit networks, headquartered in Tokyo.
What it's used for
- Commercial internet transit, connectivity, and cloud/network services for businesses across Japan and beyond.
Notable
- A large commercial ISP and transit backbone, announcing several million IPv4 addresses.
Interesting
- IIJ was founded in 1992 and is widely regarded as Japan's first commercial internet provider; the low AS number reflects that early start.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 15 exchanges in 6 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.193.136 |
| LINX LON1 | London, United Kingdom | 195.66.225.237 |
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.228.196 |
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.236.23 |
| Seattle Internet Exchange | Seattle, United States | 206.81.80.237 |
| Hong Kong Internet Exchange | Hong Kong, China | 123.255.90.136 |
| Singapore Internet Exchange | Singapore, Singapore | 103.16.102.163 |
| Equinix Internet Exchange Hong Kong | Hong Kong, China | 2001:de8:7::2497:1 |
Transit providers
23 upstream, 330 downstream and 500 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-02, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 241 prefixes · 4.09M addresses IPv6 8 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 249 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS2497- Registry name
- IIJ
- Registered
- 2002-04-05
- Last changed
- 2005-06-03
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 60% valid · 162 valid, 107 with no ROA
- ROAs
- 250 authorising AS2497
- ASPA
- no ASPA record
- IRR
- 99.6% registered · 268 of 269 announcements
- Route objects
- 483 naming AS2497
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
1 DROP match Announced space overlapping the DROP prefix list.
| Announced | DROP entry | Record |
|---|---|---|
| 103.76.87.0/24 | 103.76.84.0/22 | SBL677735 |
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 449 networks and 1,846 prefixes, as published 2026-11-03. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere