data.censys.io
Every SSL/TLS certificate ever issued for this name, indexed from public CT logs.
| domain | status |
|---|---|
| data.censys.iocrt.sh SwissSign AG | expired 8mo ago |
| demo.data.censys.iocrt.sh Let's Encrypt | expires in 1mo |
| demo.data.censys.iocrt.sh Google Trust | expires in 1mo |
| *.data.censys.iocrt.sh Google Trust | expires in 0d |
| data.censys.iocrt.sh Let's Encrypt | expired 1mo ago |
| demo.data.censys.iocrt.sh Let's Encrypt | expired 2mo ago |
| data.censys.iocrt.sh Unizeto Technologies… | expired 5mo ago |
| data.censys.iocrt.sh Global Digital Cyber… | expired 7mo ago |
# Python
$ pip install ct-radar
$ ct-radar data.censys.io | httpx -silent# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar data.censys.io | nucleiRelated domains under .io
About certificate history for data.censys.io
This page lists every X.509 (SSL/TLS) certificate ever issued for data.censys.io 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 data.censys.io for newly-issued certificates in real-time (useful for detecting unauthorized issuance, phishing variants, or shadow IT) add it to your watchlist (Pro plan).