asn.dev

Autonomous system

AS41477 LMAX

Unclassified RIPE

IPv4 addresses 2.82K 4 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 5 4 downstream
Flagged prefixes 0 none

Summary

LMAX

United Kingdom · AI-generated

business finance infrastructure

LMAX is the autonomous system for LMAX Limited.

What it's used for

  • The address space carries corporate infrastructure for a financial technology firm, evidenced by reverse DNS entries pointing to lmax.com and netnames such as LMAX and UK-LMAX-20130906.
  • The AS announces 2816 IPv4 addresses across 4 prefixes with 9 observed neighbours, a ratio consistent with an internal corporate estate rather than a transit or access network.
  • Traffic from this AS consists of low-latency matching engine infrastructure and API endpoints supporting institutional trading venues for FX, metals, indices, and cryptocurrencies.

Notable

  • Registrants align with the announcer, listing LMAX IS Networks; LMAX Limited for UK blocks and LMAX Hong Kong Ltd for the 103.219.172.0/23 and 103.219.174.0/24 prefixes.
  • LMAX Group was established in 2010 by Betfair and Goldman Sachs to repurpose sports betting software for financial markets.
  • The inventory is finely subdivided into four distinct prefixes, including a dedicated allocation for the Hong Kong entity.

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

5 upstream, 4 downstream and 10 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13335Cloudflare, Inc.325
AS6461Zayo Bandwidth77
AS3491PCCW Global (HK) Ltd.20
AS2914NTT America, Inc.19
AS174Cogent Communications, LLC1

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 4 prefixes · 2.82K addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom4

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS41477
Registry name
LMAX
Registrant
AS41477-MNT
Abuse contact
network-abuse@lmax.com
Registered
2009-08-21
Last changed
2020-03-21
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 7 valid, 0 with no ROA
ROAs
12 authorising AS41477
ASPA
no ASPA record
IRR
100% registered · 7 of 7 announcements
Route objects
23 naming AS41477

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: 432 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