Find every subdomain
of a domain.

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

14 hosts · 258 ms

Download CSV
HostCertsFirst seenLast seen
computeruniverse.net 38 2025-11-03 2026-09-19
*.computeruniverse.net 26 2026-04-30 2026-09-19
*.web-k8s-prod-01.computeruniverse.net 10 2026-04-30 2026-08-26
tag.computeruniverse.net 1 2025-12-25 2025-12-25
2a57j78g1ruqpkr7f4dlesgu6ph08ny.tag.computeruniverse.net 1 2025-12-25 2025-12-25
cloud.mail.computeruniverse.net 2 2026-09-15 2026-09-15
image.mail.computeruniverse.net 9 2026-09-15 2026-09-29
click.mail.computeruniverse.net 1 2026-07-31 2026-07-31
view.mail.computeruniverse.net 2 2026-09-15 2026-09-15
tm.computeruniverse.net 1 2025-11-11 2025-11-11
tr.computeruniverse.net 2 2026-03-02 2026-08-10
news.computeruniverse.net 5 2026-05-30 2026-09-27
www.computeruniverse.net 2 2025-11-03 2025-11-03
canny.computeruniverse.net 13 2026-06-04 2026-08-30

Programmatic access: API GET /v1/hosts/computeruniverse.net (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/computeruniverse.net.