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.

36 hosts · 693 ms

HostCertsFirst seenLast seenDNS
oasis.tech 25 2026-04-16 2026-10-06 ok
*.oasis.tech 15 2026-04-16 2026-10-06 —
grow1.oasis.tech 10 2026-04-29 2026-08-25 ok
zac.oasis.tech 2 2026-05-07 2026-05-07 ok
dmarc.oasis.tech 1 2026-05-08 2026-05-08 ok
marketplace.oasis.tech 2 2026-05-07 2026-05-07 nxdomain
unavailable.oasis.tech 3 2026-07-01 2026-08-31 ok
billing.oasis.tech 5 2026-05-16 2026-09-18 ok
passwordpush.oasis.tech 2 2026-08-24 2026-08-28 ok
unifi.oasis.tech 4 2026-05-08 2026-05-08 ok
link.oasis.tech 4 2026-04-21 2026-08-19 ok
portal.oasis.tech 4 2025-12-14 2026-09-28 ok
spam.oasis.tech 4 2026-05-08 2026-05-08 ok
rmm.oasis.tech 2 2026-05-07 2026-05-07 ok
go.oasis.tech 5 2026-05-10 2026-09-05 ok
app.oasis.tech 5 2026-05-18 2026-09-15 ok
backup.oasis.tech 3 2026-07-05 2026-09-02 ok
s.oasis.tech 5 2026-05-17 2026-09-15 ok
cameras.oasis.tech 4 2026-04-29 2026-04-29 ok
jobs.oasis.tech 2 2026-05-08 2026-05-08 nxdomain
uploads.oasis.tech 4 2026-05-08 2026-05-08 nxdomain
files.oasis.tech 5 2026-06-08 2026-10-06 ok
phones.oasis.tech 5 2026-05-27 2026-09-23 ok
quotes.oasis.tech 27 2025-06-24 2026-05-12 ok
dns.oasis.tech 4 2026-05-02 2026-09-04 ok
contracts.oasis.tech 1 2026-08-06 2026-08-06 nxdomain
tickets.oasis.tech 1 2025-12-22 2025-12-22 ok
payments.oasis.tech 2 2026-05-07 2026-05-07 ok
virus.oasis.tech 2 2026-05-07 2026-05-07 ok
start.oasis.tech 15 2026-05-08 2026-09-25 ok
www.start.oasis.tech 9 2026-05-30 2026-09-25 ok
dmarctest.oasis.tech 6 2026-04-24 2026-06-23 ok
grow.oasis.tech 9 2026-06-07 2026-10-03 ok
www.oasis.tech 6 2026-05-08 2026-06-26 ok
xerox.oasis.tech 4 2026-05-08 2026-05-08 nxdomain
security.oasis.tech 2 2026-05-07 2026-05-07 ok

Programmatic access, with DNS A records: API GET /v1/hosts/oasis.tech (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/oasis.tech.