asn.dev

Autonomous system

AS207524 LONDSTOCK-US London Stock Exchange PLC

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

London Stock Exchange Group

United Kingdom · AI-generated

business finance infrastructure

LONDSTOCK-US is operated by London Stock Exchange Group PLC.

What it's used for

  • The address space carries internal corporate infrastructure, evidenced by the netname UK-LCHCLEARNET-20080603 and registrant LSEG-ROLE; London Stock Exchange PLC; Network Support.
  • The AS announces 512 IPv4 addresses across 1 prefix with 3 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
  • Traffic from this AS consists of internal systems and endpoints for a global financial markets data and infrastructure provider, supporting exchange operations and data services.

Notable

  • The registrant LSEG-ROLE; London Stock Exchange PLC; Network Support aligns with the announcer, confirming the space is owned and managed by the exchange group.
  • The address inventory consists of a single /23 block, reflecting a finely subdivided internal corporate estate rather than a broad public-facing network.

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

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS202Level 3 Parent, LLC122
AS3356Level 3 Parent, LLC33
AS6461Zayo Bandwidth28

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, 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 1 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS207524
Registry name
LONDSTOCK-US
Registrant
LSEG-MNT
Abuse contact
internet@lchclearnet.com
Registered
2020-01-20
Last changed
2020-01-20
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS207524
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
6 naming AS207524

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: 448 networks and 1,851 prefixes, as published 2026-11-04. 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