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udemy.com

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

csv export pro
total records
278
active · on this page
5
expired · on this page
13
unique issuers · on this page
7
issuers on this pageGoDaddy4Microsoft4Let's Encrypt4Google Trust3Entrust1DigiCert1SwissSign AG1
domainstatus
*.udemy.comcrt.sh
GoDaddy
expired 2mo ago
*.udemy.comcrt.sh
GoDaddy
expired 2mo ago
data.pendo.udemy.comcrt.sh
Entrust
expired 2mo ago
partnerportal.udemy.comcrt.sh
Google Trust
expired 2mo ago
partnerportal.udemy.comcrt.sh
Google Trust
expired 2mo ago
uat.transport.udemy.comcrt.sh
Microsoft
expires in 1mo
uat.signing.udemy.comcrt.sh
Microsoft
expires in 1mo
*.udemy.comcrt.sh
DigiCert
expires in 9mo
productionhub.udemy.comcrt.sh
Microsoft
expired 4mo ago
aws-dr.udemy.comcrt.sh
Microsoft
expired 5mo ago
support.udemy.comcrt.sh
SwissSign AG
expired 6mo ago
udemy.comcrt.sh
Google Trust
expired 1d ago
legalteam.udemy.comcrt.sh
Let's Encrypt
expired 8d ago
*.udemy.comcrt.sh
GoDaddy
expired 19d ago
*.udemy.comcrt.sh
GoDaddy
expired 2mo ago
udemy.comcrt.sh
Let's Encrypt
expired 3mo ago
helpdesk.taxforms.udemy.comcrt.sh
Let's Encrypt
expires in 8mo
helpdesk.taxforms.udemy.comcrt.sh
Let's Encrypt
expires in 8mo
Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar udemy.com | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar udemy.com | nuclei
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About certificate history for udemy.com

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