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.

31 hosts · 271 ms

HostCertsFirst seenLast seen
aries.com 32 2026-04-22 2026-10-07
*.aries.com 21 2026-04-22 2026-09-09
beta.aries.com 4 2026-04-19 2026-08-17
cc.aries.com 2 2026-02-21 2026-07-24
download.aries.com 3 2026-07-15 2026-09-13
brand.aries.com 10 2026-04-28 2026-08-25
friend.aries.com 8 2026-07-02 2026-08-30
gitlab.codebase.aries.com 2 2026-10-02 2026-10-02
vpn.codebase.aries.com 2 2026-10-02 2026-10-02
staff.aries.com 3 2026-02-02 2026-07-23
staging.aries.com 4 2026-04-21 2026-08-19
testing.aries.com 8 2026-06-29 2026-10-07
pitch.aries.com 13 2026-06-02 2026-09-28
deck.aries.com 6 2026-05-29 2026-10-01
click.aries.com 1 2026-07-15 2026-07-15
internal.servicedesk.aries.com 2 2025-08-26 2026-07-27
dataroom.aries.com 3 2026-06-14 2026-08-15
soon.aries.com 4 2026-04-21 2026-08-14
www.soon.aries.com 4 2026-04-21 2026-08-14
memo.aries.com 5 2026-05-27 2026-09-28
help.aries.com 5 2026-05-14 2026-09-11
app.aries.com 2 2026-02-20 2026-07-23
client-center.aries.com 1 2026-02-20 2026-02-20
docs.aries.com 9 2026-05-30 2026-09-25
internal.docs.aries.com 5 2026-05-05 2026-09-07
careers.aries.com 2 2026-05-01 2026-05-01
documents.aries.com 1 2026-02-04 2026-02-04
www.documents.aries.com 1 2026-02-04 2026-02-04
status.aries.com 4 2026-04-15 2026-08-12
www.aries.com 5 2026-05-10 2026-09-07
security.aries.com 10 2026-06-04 2026-10-01

Programmatic access: API GET /v1/hosts/aries.com (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/aries.com.