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.

50 hosts · 337 ms

HostCertsFirst seenLast seenDNS
harvey.ai 7 2026-04-22 2026-08-22 ok
*.harvey.ai 1 2026-05-20 2026-05-20 —
forum-nyc-26.harvey.ai 5 2026-04-22 2026-10-02 ok
meta.harvey.ai 4 2026-05-02 2026-08-20 ok
workspace.harvey.ai 7 2026-05-29 2026-10-01 ok
opensense.harvey.ai 5 2026-05-22 2026-09-20 ok
ping.harvey.ai 5 2026-04-12 2026-10-06 ok
au.ping.harvey.ai 5 2026-04-12 2026-10-06 ok
eu.ping.harvey.ai 5 2026-04-12 2026-10-06 ok
outreach.harvey.ai 5 2026-05-05 2026-09-02 ok
api.harvey.ai 5 2026-05-28 2026-09-13 ok
au.api.harvey.ai 5 2026-05-20 2026-09-13 ok
eu.api.harvey.ai 5 2026-05-11 2026-09-04 ok
link.harvey.ai 5 2026-05-26 2026-09-23 ok
forum.harvey.ai 3 2026-06-10 2026-08-09 ok
bimi-cdn.harvey.ai 2 2026-04-03 2026-09-03 ok
wordaddin.harvey.ai 5 2026-06-01 2026-09-23 ok
au.wordaddin.harvey.ai 5 2026-05-25 2026-09-16 ok
eu.wordaddin.harvey.ai 5 2026-06-01 2026-09-23 ok
learn.harvey.ai 1 2025-06-10 2025-06-10 nxdomain
info.harvey.ai 12 2026-04-20 2026-08-16 ok
go.harvey.ai 6 2026-04-20 2026-08-16 ok
help.harvey.ai 5 2026-05-21 2026-09-22 ok
eu.help.harvey.ai 4 2026-04-17 2026-08-21 ok
www.eu.help.harvey.ai 5 2026-05-08 2026-09-11 ok
www.help.harvey.ai 5 2026-05-08 2026-09-12 ok
app.harvey.ai 5 2026-04-17 2026-09-29 ok
azure.app.harvey.ai 5 2026-05-01 2026-08-21 ok
au.app.harvey.ai 5 2026-05-14 2026-09-05 ok
*.au.app.harvey.ai 1 2026-09-04 2026-09-04 —
eu.app.harvey.ai 5 2026-04-28 2026-08-20 ok
failover.harvey.ai 1 2026-05-20 2026-05-20 nodata
us.click.notifications.harvey.ai 2 2026-05-04 2026-10-04 ok
au.click.notifications.harvey.ai 2 2026-05-04 2026-10-04 ok
eu.click.notifications.harvey.ai 2 2026-05-04 2026-10-04 ok
developers.harvey.ai 18 2026-04-27 2026-09-06 ok
assets.harvey.ai 4 2026-06-04 2026-09-23 ok
azure.assets.harvey.ai 2 2026-01-13 2026-06-11 ok
events.harvey.ai 4 2026-06-05 2026-10-03 ok
email.events.harvey.ai 4 2026-06-05 2026-10-03 ok
status.harvey.ai 5 2026-05-26 2026-09-28 ok
support.harvey.ai 3 2026-06-14 2026-06-17 ok
portal.support.harvey.ai 3 2026-06-17 2026-08-16 ok
forum-nyc-26-test.harvey.ai 4 2026-05-02 2026-10-02 ok
trust.harvey.ai 8 2026-05-02 2026-08-28 ok
www.harvey.ai 4 2026-04-20 2026-08-21 ok
academy.harvey.ai 1 2025-11-25 2025-11-25 ok
certifications.academy.harvey.ai 2 2026-03-04 2026-08-04 ok
assets.academy.harvey.ai 1 2026-09-28 2026-09-28 ok
security.harvey.ai 5 2026-04-16 2026-10-01 ok

Programmatic access, with DNS A records: API GET /v1/hosts/harvey.ai (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/harvey.ai.