4 ms·

https://crt.sh https://crt.sh is a popular search engine for them, and there are other tools (like Censys) that also expose this data.

• 0x0 6y ago
  Setting up a wildcard search for your domains with crt.sh's rss feeds into slack is a great way to stay alerted on certificates issued on your domains.
  • technion 6y ago
    I built an alerting service to do exactly that for you. https://ctadvisor.lolware.net/ https://ctadvisor.lolware.net/