Every SSL/TLS certificate ever issued for this name, indexed from public CT logs.
| domain | status |
|---|---|
| *.tsn01.in.zhihu.comcrt.sh Let's Encrypt | expired 10mo ago |
| *.pek02.in.zhihu.comcrt.sh Let's Encrypt | expired 1y ago |
| *.in.zhihu.comcrt.sh Amazon | expired 1y ago |
| zhihu.comcrt.sh Hellenic Academic an… | expired 1y ago |
| *.zhihu.comcrt.sh Hellenic Academic an… | expired 1y ago |
| ir.zhihu.comcrt.sh DigiCert | expired 21d ago |
| pek01.in.zhihu.comcrt.sh Microsoft | expires in 7mo |
| zstatics.zhihu.comcrt.sh Microsoft | expires in 2mo |
| zhihu.comcrt.sh DigiCert | expires in 7mo |
| www.zhuanlan1.zhihu.comcrt.sh Google Trust | expires in 1mo |
| *.pek02.in.zhihu.comcrt.sh Microsoft | expires in 4mo |
| ir.zhihu.comcrt.sh Amazon | expired 21d ago |
| zstatics.zhihu.comcrt.sh Microsoft | expires in 2mo |
| zpres.zhihu.comcrt.sh Microsoft | expires in 2mo |
| dev.zhihu.comcrt.sh Microsoft | expires in 2mo |
| tsn01.in.zhihu.comcrt.sh Microsoft | expires in 1mo |
| in.zhihu.comcrt.sh Microsoft | expires in 8mo |
| artemis.zhihu.comcrt.sh Microsoft | expires in 8mo |
| artemis.zhihu.comcrt.sh Microsoft | expires in 8mo |
# Python
$ pip install ct-radar
$ ct-radar zhihu.com | httpx -silent# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar zhihu.com | nucleiThis page lists every X.509 (SSL/TLS) certificate ever issued for zhihu.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 zhihu.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).