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hlh.who.int

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

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Filters
10 on page · 10 matched
total records
10
active · on this page
0
expired · on this page
10
unique issuers · on this page
6
issuers on this pageGoogle Trust3Unknown Issuer3Let's Encrypt1DigiCert1Apple1Microsoft1
domainissuervalidstatus
hlh.who.intcrt.sh
Google Trust
Google TrustFeb 15, 2025→May 16, 2025expired 11mo ago
hlh.who.intcrt.sh
Google Trust
Google TrustFeb 15, 2025→May 16, 2025expired 11mo ago
hlh.who.intcrt.sh
Google Trust
Google TrustFeb 15, 2025→May 16, 2025expired 11mo ago
hlh.who.intcrt.sh
Let's Encrypt
Let's EncryptDec 18, 2024→Mar 18, 2025expired 1y ago
hlh.who.intcrt.sh
DigiCert
DigiCertDec 18, 2024→Mar 18, 2025expired 1y ago
hlh.who.intcrt.sh
Unknown Issuer
Unknown IssuerOct 20, 2024→Jan 18, 2025expired 1y ago
hlh.who.intcrt.sh
Unknown Issuer
Unknown IssuerOct 20, 2024→Jan 18, 2025expired 1y ago
hlh.who.intcrt.sh
Unknown Issuer
Unknown IssuerOct 20, 2024→Jan 18, 2025expired 1y ago
hlh.who.intcrt.sh
Apple
AppleDec 22, 2023→Mar 21, 2024expired 2y ago
hlh.who.intcrt.sh
Microsoft
MicrosoftJan 16, 2026→Apr 16, 2026expired 22d ago
Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar hlh.who.int | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar hlh.who.int | nuclei
Free tier: 100 searches/day · Pro $29/mo for 10,000/day

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About certificate history for hlh.who.int

This page lists every X.509 (SSL/TLS) certificate ever issued for hlh.who.int 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 hlh.who.int for newly-issued certificates in real-time (useful for detecting unauthorized issuance, phishing variants, or shadow IT) add it to your watchlist (Pro plan).