Every SSL/TLS certificate ever issued for this name, indexed from public CT logs.
| domain | status |
|---|---|
| test.outlook.comcrt.sh DigiCert | expires in 3mo |
| test.outlook.comcrt.sh Unknown Issuer | expires in 2mo |
| test.outlook.comcrt.sh Unknown Issuer | expires in 2mo |
| test.outlook.comcrt.sh Unknown Issuer | expires in 2mo |
| test.outlook.comcrt.sh Unknown Issuer | expires in 2mo |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expires in 6mo |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 7mo ago |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 8mo ago |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 9mo ago |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 10mo ago |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 1mo ago |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 2mo ago |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 2mo ago |
| test.outlook.comcrt.sh Alibaba Cloud Comput… | expired 3mo ago |
| secretinventory.test.outlook.comcrt.sh Alibaba Cloud Comput… | expires in 7mo |
| test.outlook.comcrt.sh DigiCert | expires in 3mo |
| test.outlook.comcrt.sh GlobalSign | expires in 3mo |
| test.outlook.comcrt.sh GlobalSign | expires in 3mo |
| test.outlook.comcrt.sh GlobalSign | expires in 3mo |
| test.outlook.comcrt.sh GlobalSign | expires in 3mo |
# Python
$ pip install ct-radar
$ ct-radar test.outlook.com | httpx -silent# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar test.outlook.com | nucleiThis page lists every X.509 (SSL/TLS) certificate ever issued for test.outlook.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 test.outlook.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).