asn.dev

Autonomous system

AS8651 MUSI

Unclassified RIPE

IPv4 addresses 65.79K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 4 0 downstream
Flagged prefixes 0 none

Summary

MUFG Securities EMEA

United Kingdom · AI-generated

enterprise finance legacy

MUFG Securities EMEA PLC (MUSI) — the European investment-banking arm of Japan's Mitsubishi UFJ Financial Group, based at Ropemaker Place in the City of London.

What it's used for

  • The bank's own network. Its main holding is 162.11.0.0/16 (netname UKMFIL), a legacy class-B block registered directly to MUFG Securities EMEA at its London address, announced as a summary route over Colt and Lumen circuits.
  • It also originates 193.104.4.0/24, registered as BTMU-NET to the former Bank of Tokyo-Mitsubishi UFJ entity — a fossil of the group's pre-merger naming.
  • No customer or subscriber space anywhere: this is trading, settlement and corporate infrastructure for one financial institution.

Notable

  • Roughly 65,000 addresses for a single bank is unremarkable for a legacy /16 holder. Financial institutions were early, well-funded internet adopters and many hold class-B space they will never fully route.
  • The LEGACY status on the inetnum means the block predates the RIPE NCC's allocation policies and is held under the legacy-resources arrangement rather than a normal LIR allocation.

Interesting

  • The registry preserves the group's merger history better than its own website does. MUSI, UKMFIL and BTMU-NET are three different eras of naming for the same institution, all still live in RIPE objects.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

4 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13335Cloudflare, Inc.585
AS8220COLT Technology Services Group Limited42
AS3356Level 3 Parent, LLC11
AS6461Zayo Bandwidth5

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 2 prefixes · 65.79K addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS8651
Registry name
MUSI
Registrant
MNT-RM162
Abuse contact
Network.Services@int.sc.mufg.jp
Registered
2006-08-15
Last changed
2023-12-01
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 10 with no ROA
ROAs
0 authorising AS8651
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
11 naming AS8651

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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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

Cross-check