What technology does Facebook run?

Manufacturing CN Company

CipherCue observes Facebook's public-facing infrastructure: its technology stack, hosting geography, DNS and email posture, certificates, and how these change over time.

13 categories of public infrastructure observed, from March 2026 to October 2026.

Hosting observed: FACEBOOK · US.

What CipherCue observes for Facebook

Certificate transparency DNS & email policy Hosting attribution JavaScript bundles Exposed services Subdomain resolution Technology stack TLS configuration Trust & security disclosures

AI crawlers blocked in robots.txt

Facebook disallows 13 of 19 known AI crawlers in its robots.txt.

OAI-SearchBot · OpenAI ChatGPT-User · OpenAI Claude-Web · Anthropic anthropic-ai · Anthropic Claude-SearchBot · Anthropic CCBot · Common Crawl Perplexity-User · Perplexity Bytespider · ByteDance Meta-ExternalAgent · Meta FacebookBot · Meta cohere-ai · Cohere MistralAI-User · Mistral DuckAssistBot · DuckDuckGo

Primary source: https://facebook.com/robots.txt (observed 12 October 2026).

Other Manufacturing organisations

Airliquide Assaabloy Digiprint Dyson Corp. Emerson Envea

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How this is observed: CipherCue continuously probes the public-facing infrastructure of tracked organisations. All observations are produced from publicly accessible sources only: no authenticated access, no intrusive probing, no third-party data feeds. See the observation methodology for full detail.