Company Index › Materials

Cleveland-Cliffs clevelandcliffs.com Partial data, full scan by Oct 31

Fortune 500 rank #233 · Materials · Metals · CLF
Last scanned 2026-10-19 · next scan Sat, Oct 31

Full DNS records → NS, MX, mail and SPF senders, verification vendors, certificate authorities, CNAME chains, ASNs and history per hostname

AI vendors verified: Anthropic

DNS

Zones (1)

Each DNS zone that holds a scanned hostname: the domain apex, brand domains and any delegated subdomain. Two vendors on one zone = secondary DNS.

CDN & Security

Hostname map

The live hostnames from the table below, grouped by the provider in front of it and the network (ASN and BGP prefix) its address belongs to. Colored borders mark roles: primary site login / account store developer / API marketing / support / downloads.

Key hostnames by role (CDN & security)

• primary site: AWS
• login / SSO: none found
• account: none found
• store / checkout: none found
• marketing / brand: none found
• support / help: none found
• developer / API: none found
• downloads / static: none found

Hostnames (2)

Found through brand research, browser traffic data (Chrome UX Report) and certificate logs. Tiers: primary = clevelandcliffs.com and www; key = customer-facing or revenue names (login, account, store, marketing/brand, support, developer, downloads) on any owned domain; other = remaining public names (low weight); internal = staff-only names, not listed here and not counted in share. "CDN & Security" is the CDN, WAF or cloud load balancer a visitor connects to first. Grey rows did not resolve. Weight = share of the company's traffic-weighted total.

History

Trend charts start once two weeks of history build up.

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