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Antofagasta plc Mining & Quarrying

FTSE 100 constituent (ANTO)

Overview

Antofagasta plc operates in the Mining & Quarrying sector. It is on record with Companies House under company number 01627889: incorporated 1982-04-07, currently active, with SIC codes 07290 (mining of other non-ferrous metal ores), 49200 (freight rail transport), and 49410 (freight transport by road); no persons with significant control are listed. Its primary domain, antofagasta.co.uk, has one observed subdomain, www.antofagasta.co.uk, and was registered 1997-05-07 through Onega LTD, expiring 2028-05-07. A crawl of that domain fetched 200 pages, tracing 20885 internal links and 62 external links, including a cluster of investor-results pages on open-exchange.net. Its TLS certificate is issued by Google Trust Services; HSTS is not enabled and no CSP is present. Infrastructure sits behind Cloudflare, Inc. (AS13335). Nameservers are AWS-hosted, mail routes through Mimecast, SPF is published, and no DMARC policy is set.

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

Web presence

Primary domain: antofagasta.co.uk. 1 subdomains observed via Certificate Transparency and direct crawl.

200 pages fetched from www.antofagasta.co.uk on 2026-08-26 — 20885 internal links observed, 769149224 bytes. Page title: “Home | Antofagasta PLC”

TLS issued by Google Trust Services, valid 2026-08-15 – 2026-11-13. — HSTS not seen, CSP not seen.

Links out to 62 external domains (from the crawled site, most recent pass), top 50 shown: almarwater.com, antofagasta-2023-fy-results-call.open-exchange.net, antofagasta-2024-fy-results.open-exchange.net, antofagasta-2024-hy-results.open-exchange.net, antofagasta-2025-fy-results.open-exchange.net, antofagasta-2025-hy-results.open-exchange.net, antofagasta-2026-hy-results.open-exchange.net, antofagasta.co.uk, antofagasta-creating-a-tier-1-mining-district.open-exchange.net, antofagasta-fy-results-2022.open-exchange.net, antofagasta-hy-earnings-call-2023.open-exchange.net, antofagastaplc-2022-half-year-results-q-a-video-conference.open-exchange.net, chargeoninnovation.com, coppermark.org, data.fca.org.uk, emperor.works, fcab.trabajando.cl, fch.cl, openexc.zoom.us, player.vimeo.com, protect-eu.mimecast.com, sr2025.antofagasta.co.uk, sr.antofagasta.co.uk, sri.aminerals.cl, stream.brrmedia.co.uk, support.apple.com, support.mozilla.com, teams.microsoft.com, tools.google.com, url.uk.m.mimecastprotect.com, us02web.zoom.us, vimeo.com, web.antucoya.cl, webcasting.brrmedia.co.uk, web.lumiagm.com, web.mineracentinela.cl, web.minerazaldivar.cl, web.pelambres.cl, www.allaboutcookies.org, www.aminerals.cl, www.chiletransparente.cl, www.computershare.com, www.c-resource.com, www.dga.cl, www.eproxyappointment.com, www.fcab.cl, www.google.com, www.google.co.uk, www.gov.uk, www.icmm.com — and 12 more

Infrastructure

Hosted on: AS13335 CLOUDFLARENET - Cloudflare, Inc., US (SE)

Mail: eu-smtp-inbound-1.mimecast.com, eu-smtp-inbound-2.mimecast.com. SPF present. No DMARC record. Nameservers: ns-1245.awsdns-27.org, ns-169.awsdns-21.com, ns-1788.awsdns-31.co.uk, ns-961.awsdns-56.net.

Registered via Onega LTD. Registered 1997-05-07. Expires 2028-05-07.

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.

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

DNS: Amazon Route 53. TLS certificate: Google Trust Services. Primary host: Cloudflare, 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.

Microsoft 365 Mimecast

Corporate record

Company number 01627889, Active, incorporated 1982-04-07. SIC: 07290 - Mining of other non-ferrous metal ores, 49200 - Freight rail transport, 49410 - Freight transport by road. Registered office: 103 MOUNT STREET, LONDON, W1K 2TJ. Last confirmation statement: 2025-09-02. 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.