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.

35 hosts · 291 ms

HostCertsFirst seenLast seen
paradigm.xyz 25 2026-05-11 2026-09-23
*.paradigm.xyz 20 2026-05-22 2026-09-23
data.paradigm.xyz 5 2026-05-24 2026-09-26
onboard.paradigm.xyz 3 2026-06-12 2026-08-13
offsite.paradigm.xyz 1 2026-04-17 2026-04-17
coworkingsf.paradigm.xyz 3 2026-06-26 2026-08-28
meraki-syslog.paradigm.xyz 1 2026-08-24 2026-08-24
clerk.rethmatch.paradigm.xyz 9 2026-05-19 2026-09-14
accounts.rethmatch.paradigm.xyz 9 2026-05-19 2026-09-14
auth.paradigm.xyz 4 2026-07-13 2026-09-10
helpdesk.paradigm.xyz 9 2026-06-02 2026-09-28
internal.paradigm.xyz 4 2026-06-15 2026-10-02
scim.paradigm.xyz 5 2026-04-19 2026-09-30
lockesymposium.paradigm.xyz 4 2026-04-21 2026-08-25
cn.paradigm.xyz 2 2026-05-18 2026-05-18
kheiron.paradigm.xyz 4 2026-05-04 2026-10-09
miq.paradigm.xyz 3 2026-05-04 2026-08-24
jobs.paradigm.xyz 6 2026-05-08 2026-09-16
puzzles.paradigm.xyz 5 2026-04-30 2026-09-04
predictions.paradigm.xyz 5 2026-05-28 2026-09-29
daos.paradigm.xyz 5 2026-05-21 2026-09-23
founders.paradigm.xyz 4 2026-05-18 2026-07-20
frontiers.paradigm.xyz 3 2026-04-20 2026-06-21
datasets.paradigm.xyz 10 2026-05-06 2026-09-02
events.paradigm.xyz 4 2026-06-04 2026-10-02
mta-sts.paradigm.xyz 12 2026-04-18 2026-08-15
genius.paradigm.xyz 6 2026-06-04 2026-10-07
reviews.paradigm.xyz 4 2026-04-23 2026-10-04
shift.paradigm.xyz 4 2026-04-22 2026-10-03
dev.shift.paradigm.xyz 3 2026-05-26 2026-09-13
www.paradigm.xyz 5 2026-05-09 2026-09-09
flux.paradigm.xyz 3 2026-06-03 2026-08-04
mint-burn.policy.paradigm.xyz 4 2026-04-28 2026-10-09
ethicsrules.policy.paradigm.xyz 5 2026-05-02 2026-09-05
coworkingny.paradigm.xyz 3 2026-06-22 2026-08-22

Programmatic access: API GET /v1/hosts/paradigm.xyz (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/paradigm.xyz.