ctail

ctail

Tail Certificate Transparency logs and extract hostnames.

This utility is an alternative to using hosted services like crt.sh or CertStream.

Usage:

$ go install github.com/hdm/ctail@latest
$ ctail -f -m '^autodiscover\.'

Logs are written to standard error and results are formatted as NDJSON/JSONL and written to standard output.

This makes it easy to pass ctail output into tools like jq.