Spirax Group Manufacturing
FTSE 100 constituent (SPX)
Overview
Spirax Group operates in the manufacturing sector, with a primary web presence at spiraxgroup.com and two subdomains on record: www.spiraxsarco.com and www.spiraxgroup.com. A crawl of www.spiraxgroup.com fetched 102 pages and logged 6961 internal links; spiraxsarco.com, recorded as a related-domain candidate, shows a larger crawl of 200 pages and 23 external links. The site is hosted on Microsoft Corporation infrastructure (AS8075, US), with TLS issued by GlobalSign nv-sa, HSTS enabled, and no CSP present. Mail routes through spiraxgroup-com.mail.protection.outlook.com, with SPF present and a DMARC policy of reject. The domain is registered through Key-Systems GmbH, dated 2021-12-07 and expiring 2026-12-07. Companies House records the entity as company number 00596337, active, incorporated 1958-01-01 under SIC code 28131 - Manufacture of pumps, previously registered as Spirax-Sarco Engineering plc, with no persons with significant control on record.
Generated from the data on this page and independently fact-checked against it.
Web presence
Primary domain: spiraxgroup.com.
9 subdomains observed via Certificate Transparency and direct crawl.
102 pages fetched from
www.spiraxgroup.com on 2026-08-27
— 6961 internal links observed, 9747221 bytes.
Page title: “Spirax Group | Solutions for a more efficient, safer and sustainable world”
TLS issued by GlobalSign nv-sa, valid 2026-01-23 – 2027-02-24. Certificate also covers: *.spiraxgroup.com, spiraxgroup.com. — HSTS enabled, CSP not seen, X-Frame-Options: sameorigin.
Links out to 30 external domains (from the crawled site, most recent pass):
, ar23.spiraxgroup.com, businessdisabilityforum.org.uk, changetheraceratio.com, content.spiraxgroup.com, disabilityconfident.campaign.gov.uk, edge.media-server.com, find-and-update.company-information.service.gov.uk, onlinexperiences.com, sciencebasedtargets.org, sseacademy.csod.com, unglobalcompact.org, unitedgmh.org, www.bitc.org.uk, www.chromalox.com, www.durexindustries.com, www.fca.org.uk, www.gestra.com, www.linkedin.com, www.shareview.co.uk, www.spiraxsarco.com, www.stonewall.org.uk, www.thermocoax.com, www.unfe.org, www.vulcanic.com, www.weps.org, www.wes.org.uk, www.wisecampaign.org.uk, www.wmfts.com, www.womeninworkgroup.com
| Hostname | Source | First seen |
|---|---|---|
| www.spiraxsarco.com:443 | manual | 2026-08-28 |
| www.spiraxsarco.com | manual | 2026-08-27 |
| www.spiraxgroup.com | manual | 2026-08-26 |
| spiraxdesuperheaters.spiraxsarco.com | certificate_transparency | 2026-08-26 |
| simsqa.spiraxsarco.com | certificate_transparency | 2026-08-26 |
| ebooks.spiraxsarco.com | certificate_transparency | 2026-08-21 |
| qa.iot.spiraxsarco.com | certificate_transparency | 2026-08-21 |
| solutions.spiraxsarco.com | certificate_transparency | 2026-08-19 |
| www3.spiraxsarco.com | certificate_transparency | 2026-08-17 |
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.
| Domain | Status | Pages crawled | External links | Registrar | Nameservers |
|---|---|---|---|---|---|
spiraxsarco.com |
candidate | 200 | 23 | Key-Systems GmbH | auth0020.ns.eu.uu.net, auth0030.ns.eu.uu.net |
spiraxsarco.com:443 |
candidate | 1 | 7 | — | — |
Infrastructure
Hosted on: AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US (US)
Mail: spiraxgroup-com.mail.protection.outlook.com. SPF present. DMARC policy: reject. Nameservers: auth0020.ns.eu.uu.net, auth0030.ns.eu.uu.net.
Registered via Key-Systems GmbH. Registered 2021-12-07. Expires 2026-12-07.
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: Microsoft Corporation. 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.
Anthropic Apple Business Manager Atlassian (Jira / Confluence) Autodesk GlobalSign IBM Microsoft 365
Corporate record
Company number 00596337,
Active, incorporated
1958-01-01.
SIC: 28131 - Manufacture of pumps.
Registered office: CHARLTON HOUSE CIRENCESTER ROAD, CHARLTON KINGS, CHELTENHAM, GL53 8ER.
Previously known as: SPIRAX-SARCO ENGINEERING PLC.
Last confirmation statement: 2026-05-27.
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
No public GitHub organisation identified.