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releases.ubuntu.com

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

csv export pro
Filters
20 on page · 45 matched
total records
45
active · on this page
3
expired · on this page
17
unique issuers · on this page
5
issuers on this pageLet's Encrypt10Google Trust5Unknown Issuer3Unizeto Technologies…1SwissSign AG1
domainissuervalidstatus
mu.releases.ubuntu.comcrt.sh
Google Trust
Google TrustJan 12, 2025→Apr 12, 2025expired 1y ago
nl3.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptJan 8, 2025→Apr 8, 2025expired 1y ago
nl3.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptJan 8, 2025→Apr 8, 2025expired 1y ago
lu.releases.ubuntu.comcrt.sh
Google Trust
Google TrustJan 5, 2025→Apr 5, 2025expired 1y ago
releases.ubuntu.comcrt.sh
Google Trust
Google TrustDec 26, 2024→Mar 26, 2025expired 1y ago
www.releases.ubuntu.comcrt.sh
Google Trust
Google TrustDec 26, 2024→Mar 26, 2025expired 1y ago
nl.releases.ubuntu.comcrt.sh
Google Trust
Google TrustDec 6, 2024→Mar 6, 2025expired 1y ago
mu.releases.ubuntu.comcrt.sh
Unknown Issuer
Unknown IssuerNov 13, 2024→Feb 11, 2025expired 1y ago
lu.releases.ubuntu.comcrt.sh
Unknown Issuer
Unknown IssuerNov 6, 2024→Feb 4, 2025expired 1y ago
cl.releases.ubuntu.comcrt.sh
Unknown Issuer
Unknown IssuerOct 5, 2024→Jan 3, 2025expired 1y ago
tr.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptMar 9, 2026→Jun 7, 2026expires in 1mo
pl.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptSep 4, 2025→Dec 3, 2025expired 5mo ago
ua.releases.ubuntu.comcrt.sh
Unizeto Technologies…
Unizeto Technologies…Jun 17, 2025→Sep 15, 2025expired 7mo ago
ua.releases.ubuntu.comcrt.sh
SwissSign AG
SwissSign AGJun 8, 2025→Sep 6, 2025expired 8mo ago
no.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptMar 7, 2026→Jun 5, 2026expires in 27d
mu.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptFeb 7, 2026→May 8, 2026expires in 0d
pt.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptJan 29, 2026→Apr 29, 2026expired 9d ago
ae.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptJan 5, 2026→Apr 5, 2026expired 1mo ago
pl.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptJan 2, 2026→Apr 2, 2026expired 1mo ago
ua.releases.ubuntu.comcrt.sh
Let's Encrypt
Let's EncryptDec 18, 2025→Mar 18, 2026expired 1mo ago
showing 21–40 · 2/3
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Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar releases.ubuntu.com | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar releases.ubuntu.com | nuclei
Free tier: 100 searches/day · Pro $29/mo for 10,000/day

Related domains under .com

google.comyoutube.comgmail.comdrive.google.comfacebook.cominstagram.comwhatsapp.commessenger.comapple.comicloud.comitunes.apple.commicrosoft.com

About certificate history for releases.ubuntu.com

This page lists every X.509 (SSL/TLS) certificate ever issued for releases.ubuntu.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 releases.ubuntu.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).