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.

19 hosts · 282 ms

HostCertsFirst seenLast seenDNS
esic.edu 1 2025-10-06 2025-10-06 ok
*.esic.edu 1 2025-10-06 2025-10-06 —
cloud.mkcloud.esic.edu 1 2025-10-21 2025-10-21 ok
image.mkcloud.esic.edu 4 2025-12-22 2026-09-06 ok
click.mkcloud.esic.edu 1 2025-10-21 2025-10-21 ok
view.mkcloud.esic.edu 1 2025-10-21 2025-10-21 ok
radius-eduroam.esic.edu 2 2025-09-22 2025-10-06 ok
www.radius-eduroam.esic.edu 2 2025-09-22 2025-10-06 nxdomain
gtm.esic.edu 8 2026-04-29 2026-09-20 ok
en.esic.edu 10 2026-05-07 2026-09-03 ok
revistasinvestigacion.esic.edu 4 2026-06-05 2026-10-04 ok
www.revistasinvestigacion.esic.edu 4 2026-06-05 2026-10-04 ok
udp.esic.edu 4 2026-04-15 2026-08-13 ok
backudp.esic.edu 5 2026-04-29 2026-08-17 ok
folletos.esic.edu 5 2026-04-25 2026-08-23 ok
pages-gitlab-devops.esic.edu 2 2026-04-06 2026-09-06 ok
*.pages-gitlab-devops.esic.edu 2 2026-04-06 2026-09-06 —
gitlab.devops.esic.edu 1 2025-12-24 2025-12-24 ok
zh-tw.esic.edu 6 2026-04-16 2026-08-12 ok

Programmatic access, with DNS A records: API GET /v1/hosts/esic.edu (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/esic.edu.