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Halma plc Professional & Scientific Services

FTSE 100 constituent (HLMA)

Overview

Halma plc operates in Professional & Scientific Services, with a primary domain of halma.com. A crawl of www.halma.com fetched 200 pages, finding 34685 internal and 100 external links, including asia.beasensors.com, aslh.co.uk, fortress-safety.com and halma.wd3.myworkdayjobs.com. Two subdomains were observed: www.halma.cn and www.halma.com. TLS is issued by GlobalSign nv-sa; HSTS and a CSP are both present. Hosting spans two networks: Cloudflare, Inc. (SE, ASN 13335) and Shanghai Blue Cloud Technology Co.,Ltd (CN, ASN 58593). DNS shows SPF present, a DMARC policy of reject, and mail routed through halma-com.mail.protection.outlook.com. The domain was registered 1998-01-28 through InterNetX GmbH, expiring 2027-01-27. Companies House lists company number 00040932, active, incorporated 1894-04-13 under SIC code 70100 - Activities of head offices, with no persons of significant control. Two domains are listed as related candidates: halma.cn (27 pages fetched, 38 external links) and halma.in (no crawl data).

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

Web presence

Primary domain: halma.com. 4 subdomains observed via Certificate Transparency and direct crawl.

200 pages fetched from www.halma.com on 2026-08-26 — 34685 internal links observed, 193677850 bytes. Page title: “Halma plc”

TLS issued by GlobalSign nv-sa, valid 2026-06-03 – 2026-12-19. Certificate also covers: halma.com. — HSTS enabled, CSP present, X-Frame-Options: SAMEORIGIN.

Links out to 100 external domains (from the crawled site, most recent pass), top 50 shown: asia.beasensors.com, aslh.co.uk, edge.media-server.com, en-gb.facebook.com, eu.beasensors.com, fortress-safety.com, halma.wd3.myworkdayjobs.com, hyfirewireless.com, ico.org.uk, izimed.com, mpg.investis-live.com, navtechradar.com, on.fb.me, open.spotify.com, otp.investis.com, otp.tools.investis.com, podcasts.apple.com, ramtechglobal.com, sdgs.un.org, staticcontents.investis.com, tedansurgical.com, transparency-in-coverage.uhc.com, twitter.com, uk.linkedin.com, www.actionfraud.police.uk, www.advancedco.com, www.alicat.com, www.allaboutcookies.org, www.ampac.net, www.apollo-feuer.de, www.apollo-fire.co.uk, www.arcmedgroup.com, www.argussecurity.it, www.avire-global.com, www.avophotonics.com, www.beainc.com, www.cafonline.org, www.castell.com, www.centrak.com, www.cosasco.com, www.crowcon.com, www.deeptrekker.com, www.dreampathdx.net, www.drillguide.com, www.e2s.com, www.facebook.com, www.fca.org.uk, www.ffeuk.com, www.financial-ombudsman.org.uk, www.firepro.com — and 50 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: AS13335 CLOUDFLARENET - Cloudflare, Inc., US (SE), AS58593 BLUECLOUD - Shanghai Blue Cloud Technology Co.,Ltd, CN (CN)

Mail: halma-com.mail.protection.outlook.com. SPF present. DMARC policy: reject. Nameservers: a.ns14.net, b.ns14.net, c.ns14.net, d.ns14.net.

Registered via InterNetX GmbH. Registered 1998-01-28. Expires 2027-01-27.

Digital sovereignty

2/5 — 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.

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

Primary host: Cloudflare, Inc.. Inbound mail: Microsoft 365.

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.

Apple Business Manager Campaign Monitor GlobalSign Google (Workspace / Search Console) Google Workspace Microsoft 365

Corporate record

Company number 00040932, Active, incorporated 1894-04-13. SIC: 70100 - Activities of head offices. Registered office: MISBOURNE COURT, RECTORY WAY, AMERSHAM, HP7 0DE. Last confirmation statement: 2025-08-14. Last accounts made up: 2025-03-31.

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

No public GitHub organisation identified.