crt.sh Cert Monitor — Subdomain & SSL Cert Discovery

Monitor certificate-transparency logs via crt.sh (keyless, no API key) for any domain: newly issued subdomains, certificate issuers, first/last-seen dates and cert IDs. Flat one-record-per-cert output for CSV/Excel/JSON export. Ideal for attack-surface discovery and brand monitoring.

Publisher description, verbatim

Last 7 dayson this actor

1other change

Each one reaches followers by email the morning after.Follow this actor

Key figures13 readings

Price / 1k$0.20per 1,000 result-found

Users / 30d1↑ 1 over 13 readings

Users, all time2↑ 1 over 13 readings

Runs / 30d11↑ 10 over 10 readings

Runs / user / mo11.0runs per monthly user

Recorded changes

2026-09-20schemaInput schema changed—on record
2026-09-12changeListed—on record

showing 2 of 2 in the last 30 days · followers get the next one by email

History

13 readings since 2026-09-12

Users / 30d13 readings

Users, all time13 readings

Runs / 30d10 readings

Follow this actor, compare it against its rivals, and get every overnight change in one morning report.

Publish it yourself? Claim your publisher page and its full history is yours free, forever.

Open in the app Claim this page

Numbers on this page are measured only by an independent census of the Apify Store — not self-reported. Not indexed: too little has happened to this actor for us to have anything worth saying yet.