AS29575 — LONDSTOCK-AS London Stock Exchange PLC

AS29575 announces 3 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

The AS handle LONDSTOCK-AS is held by London Stock Exchange Group PLC.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by netnames such as LONSTKEX and LSEG-Croydon-DMZ.
• The inventory consists of 1536 IPv4 addresses across 3 prefixes, with 4 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.

Notable

• Registrants include both London Stock Exchange PLC and Refinitiv IP Admin, reflecting the corporate history of the group.
• London Stock Exchange Group plc (LSEG) is the result of the merger between the London Stock Exchange and Refinitiv, which explains the mixed registrant data.
• The address inventory is finely subdivided into specific site and DMZ segments, consistent with an internal corporate estate.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 81.201.163.0/24
• 81.201.164.0/24
• 194.169.0.0/22

Upstream networks

• AS6461 Zayo Bandwidth
• AS8220 COLT Technology Services Group Limited
• AS202 Level 3 Parent, LLC

Downstream networks

• AS39610 LCH Group Holdings Limited

Adjacent networks

• AS202 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS39610 LCH Group Holdings Limited
• AS8220 COLT Technology Services Group Limited

Routing security

• RPKI: 0 valid, 0 invalid and 7 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 12 route objects.
• Listed in as-sets: AS-LSE, AS-PROLE.