Autonomous system
AS24291 MITSUI-NW - MITSUI & CO., LTD.
Unclassified APNIC
Summary
Mitsui & Co., Ltd.
business corporate japan trading
MITSUI-NW is the autonomous system for Mitsui & Co., Ltd., a major Japanese trading house.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by the reverse DNS record
mbk-as-202-4-248-128.mitsui.co.jpand netnamesMITSUI-NW-CIDR-BLK-JPandJAPAN150. - The AS announces 768 IPv4 addresses across 2 prefixes with only 2 observed neighbours, a ratio indicating a small, self-contained internal network rather than a transit or access provider.
Notable
- Registrants for both prefixes are listed as Japan Network Information Center and IRT-JPNIC-JP, which is standard for Japanese allocations and consistent with the announcer's identity.
- The inventory consists of two distinct blocks: a /23 (202.4.248.0/23) and a /24 (150.56.0.0/24), representing a modest footprint typical of a large corporation's internal estate.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 768 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 2 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS24291- Registry name
- MITSUI-NW
- Registered
- 2004-10-19
- Last changed
- 2022-08-26
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS24291
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 4 naming AS24291
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.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 455 networks and 1,849 prefixes, as published 2026-11-14. 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