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anthropic.com

Every SSL/TLS certificate ever issued for this name, indexed from public CT logs.

csv export pro
total records
514
active · on this page
0
expired · on this page
20
unique issuers · on this page
3
issuers on this pageGoogle Trust10Let's Encrypt9ZeroSSL1
domainstatus
metrics.anthropic.comcrt.sh
Let's Encrypt
expired 10mo ago
api-staging.anthropic.comcrt.sh
Let's Encrypt
expired 10mo ago
api-staging.anthropic.comcrt.sh
Google Trust
expired 10mo ago
learn.anthropic.comcrt.sh
Let's Encrypt
expired 10mo ago
learn.anthropic.comcrt.sh
Google Trust
expired 10mo ago
learn.anthropic.comcrt.sh
Let's Encrypt
expired 10mo ago
feedback.anthropic.comcrt.sh
ZeroSSL
expired 11mo ago
test.anthropic.comcrt.sh
Google Trust
expired 11mo ago
status.anthropic.comcrt.sh
Google Trust
expired 11mo ago
api-staging.anthropic.comcrt.sh
Google Trust
expired 1y ago
*.api-staging.anthropic.comcrt.sh
Google Trust
expired 1y ago
docs.anthropic.comcrt.sh
Let's Encrypt
expired 11mo ago
docs.anthropic.comcrt.sh
Google Trust
expired 11mo ago
docs.anthropic.comcrt.sh
Let's Encrypt
expired 11mo ago
alignment.anthropic.comcrt.sh
Google Trust
expired 11mo ago
www-cdn.anthropic.comcrt.sh
Google Trust
expired 11mo ago
www-cdn.anthropic.comcrt.sh
Google Trust
expired 11mo ago
www-cdn.anthropic.comcrt.sh
Let's Encrypt
expired 11mo ago
alignment.anthropic.comcrt.sh
Let's Encrypt
expired 11mo ago
alignment.anthropic.comcrt.sh
Let's Encrypt
expired 11mo ago
Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar anthropic.com | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar anthropic.com | nuclei
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About certificate history for anthropic.com

This page lists every X.509 (SSL/TLS) certificate ever issued for anthropic.com and its subdomains, as recorded in public Certificate Transparency (CT) logs. CT logs are an immutable, append-only record of every certificate issued by participating Certificate Authorities (CAs), as required by the major browsers since 2018.

Subdomain enumeration via CT logs is one of the highest-signal techniques in reconnaissance — every time a TLS certificate is issued, all Subject Alternative Names (SANs) on that certificate become public. Internal and forgotten subdomains regularly show up here days after they're set up.

To monitor anthropic.com for newly-issued certificates in real-time (useful for detecting unauthorized issuance, phishing variants, or shadow IT) add it to your watchlist (Pro plan).