Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

28 hosts · 270 ms

HostCertsFirst seenLast seenDNS
avafin.pl 49 2026-05-10 2026-10-03 ok
*.avafin.pl 21 2026-05-10 2026-10-03 —
media.avafin.pl 6 2026-10-01 2026-10-01 ok
proxy.staging.avafin.pl 5 2026-05-28 2026-09-25 ok
fallback.avafin.pl 9 2026-06-01 2026-09-27 ok
click.avafin.pl 7 2026-06-04 2026-10-03 ok
l.avafin.pl 9 2026-04-14 2026-09-06 ok
portal.avafin.pl 15 2026-04-16 2026-09-22 ok
staging.portal.avafin.pl 16 2026-05-20 2026-09-27 ok
cloud.m.avafin.pl 3 2025-09-29 2026-08-15 ok
image.m.avafin.pl 43 2025-09-29 2026-07-13 ok
click.m.avafin.pl 3 2025-09-29 2026-08-15 ok
view.m.avafin.pl 3 2025-09-29 2026-08-15 ok
s.avafin.pl 9 2026-05-26 2026-10-01 ok
test.avafin.pl 16 2026-08-25 2026-10-02 ok
*.test.avafin.pl 7 2026-08-25 2026-10-02 —
media.test.avafin.pl 4 2026-08-26 2026-09-01 ok
echo.test.avafin.pl 2 2026-08-25 2026-08-25 nxdomain
*.echo.test.avafin.pl 2 2026-08-25 2026-08-25 —
dev.test.avafin.pl 5 2026-08-25 2026-08-26 ok
*.dev.test.avafin.pl 5 2026-08-25 2026-08-26 —
media.dev.test.avafin.pl 4 2026-08-26 2026-09-01 ok
preview.avafin.pl 7 2026-10-01 2026-10-01 ok
*.preview.avafin.pl 3 2026-10-01 2026-10-01 —
media.preview.avafin.pl 6 2026-10-01 2026-10-01 ok
www.avafin.pl 20 2026-05-25 2026-09-20 ok
media.www.avafin.pl 8 2026-10-01 2026-10-01 ok
proxy.avafin.pl 11 2026-06-22 2026-08-21 ok

Programmatic access, with DNS A records: API GET /v1/hosts/avafin.pl (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/avafin.pl.