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London Stock Exchange Group Professional & Scientific Services

FTSE 100 constituent (LSEG)

Overview

London Stock Exchange Group operates in Professional & Scientific Services; its primary web presence is lseg.com, spanning 202 subdomains. A crawl of www.lseg.com fetched 200 pages, recording 9751 internal links and 109 external links to hosts including developers.lseg.com, docs.londonstockexchange.com and data.ftse.com; TLS is issued by Sectigo Limited, with HSTS and a content security policy both present. Two related domains are flagged as candidates: londonstockexchange.com, crawled to a single page with no external links, and stockreportsplus.com, with no crawl data returned. Hosting runs through Amazon.com, Inc. (ASN 16509, US); nameservers sit on Cloudflare, mail routes through Mimecast, and the domain carries SPF and a DMARC policy of reject. Companies House records an active company, number 05369106, incorporated 2005-02-18 under SIC code 70100, with zero PSCs. A confirmed GitHub organization, LSEG, holds one repository, ag-grid-playwright (TypeScript), with 22 stars.

Generated from the data on this page and independently fact-checked against it.

Web presence

Primary domain: lseg.com. 259 subdomains observed via Certificate Transparency and direct crawl.

200 pages fetched from www.lseg.com on 2026-08-26 — 9751 internal links observed, 95970013 bytes. Page title: “Financial Markets Infrastructure and Data | LSEGarrow-right”

TLS issued by Sectigo Limited, valid 2026-03-06 – 2027-04-06. Certificate also covers: content.ftserussell.com, perspectives.refinitiv.com, solutions.yieldbook.com, www.ftserussell.com, www.lch.com, www.refinitiv.com. — HSTS enabled, CSP present, X-Frame-Options: SAMEORIGIN.

Links out to 109 external domains (from the crawled site, most recent pass), top 50 shown: account.ftserussell.com, anna-web.org, appsource.microsoft.com, data.ftse.com, developers.lseg.com, docs.londonstockexchange.com, economictimes.indiatimes.com, edd.refinitiv.com, emea1-fxt.trading.refinitiv.com, eu.docusign.net, financialmarketsconnect.cventevents.com, fixedincome.wbresearch.com, flows.beamery.eu, ftse-russell-index-idea.castos.com, gzerosummiteurope2025.cventevents.com, ico.org.uk, installt1.lseg.com, investmentviewplus.lseg.com, ir.theice.com, learningcentre.lseg.com, lipperim.lipperweb.com, login.redi.com, loginservice.fxall.com, lseg.group, lseg.wd3.myworkdayjobs.com, marketplace.databricks.com, ml-eu.globenewswire.com, monitor.starmine.com, myaccount.lseg.com, my.refinitiv.com, open.spotify.com, optout.aboutads.info, pip2026.unpri.org, podcasts.apple.com, privacyportal-de.onetrust.com, product.ftserussell.com, pts.trading.refinitiv.net, refinitiv.wd3.myworkdayjobs.com, register-of-charities.charitycommission.gov.uk, request.isin.lseg.com, research.ftserussell.com, resourcehub.lseg.com, risk.lseg.com, secure.ethicspoint.eu, select.datascope.refinitiv.com, si.ftserussell.com, solutions.lseg.com, solutions.yieldbook.com, stockreportsplus.com, support.apple.com — and 59 more

Related domains

Sister brands, subsidiaries and other domains also traced to this organisation — found among its own site's external links, and independently crawled the same way as the primary domain above. Some turn out bigger than the primary site itself.

Infrastructure

Hosted on: AS16509 AMAZON-02 - Amazon.com, Inc., US (US)

Mail: eu-smtp-inbound-1.mimecast.com, eu-smtp-inbound-2.mimecast.com. SPF present. DMARC policy: reject. Nameservers: kayleigh.ns.cloudflare.com, piers.ns.cloudflare.com.

Registered via MarkMonitor Inc.. Registered 2002-10-13. Expires 2026-10-13.

Digital sovereignty

1/5 — categories confirmed not tied to a US-controlled company, out of DNS, registrar, TLS certificate, host and mail. Ultimate ownership, not the jurisdiction of the specific entity observed: a subsidiary like Google Ireland still counts as American. See the full cross-index comparison.

US DNS · US Registrar · US TLS certificate · US Primary host · OK Inbound mail

DNS: Cloudflare, Inc.. Registrar: MarkMonitor. TLS certificate: Sectigo. Primary host: Amazon.com, Inc..

Vendor footprint

Third-party vendors identified from this company's own published DNS — apex TXT domain-verification tokens and SPF include: mechanisms. See the full vendor footprint comparison.

Adobe Adobe Sign Amazon SES Anthropic DocuSign Figma Google (Workspace / Search Console) IBM Jamf Mimecast OneTrust OpenAI Postman Salesforce Smartsheet

Corporate record

Company number 05369106, Active, incorporated 2005-02-18. SIC: 70100 - Activities of head offices. Registered office: 10 PATERNOSTER SQUARE, LONDON, EC4M 7LS. Last confirmation statement: 2026-02-18. Last accounts made up: 2025-12-31.

Persons with significant control (from the public register; month/year of birth only, matching Companies House's own disclosure limit):

• No active PSC entries on the public register.

Public engineering footprint

LSEG on GitHub — 1 public repositories, 22 stars total.

• ag-grid-playwright — A simple way to test ag-grid with Playwright. Extensible enough to cover the all of ag-grid's features. ★22
  TypeScript · last push 2023-10-19 · MIT · ag-grid, ag-grid-react, automated-testing, javascript, nodejs, npm, playwright, playwright-javascript, testing, testing-tools, typescript