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.

19 hosts · 272 ms

HostCertsFirst seenLast seenDNS
royalsunresort.com 14 2026-04-11 2026-08-29 ok
*.royalsunresort.com 6 2026-04-11 2026-08-29 —
db.royalsunresort.com 6 2026-04-10 2026-08-21 ok
img.royalsunresort.com 6 2026-06-19 2026-08-17 ok
email.emailing.royalsunresort.com 5 2026-05-01 2026-08-29 ok
bimi.royalsunresort.com 1 2026-08-28 2026-08-28 ok
traefik.royalsunresort.com 4 2026-04-13 2026-08-12 ok
bookingtravel.royalsunresort.com 3 2026-06-01 2026-08-10 ok
mail.royalsunresort.com 3 2026-04-15 2026-06-15 nxdomain
sol.royalsunresort.com 14 2026-04-18 2026-09-30 ok
info.royalsunresort.com 4 2026-04-29 2026-07-21 ok
www.info.royalsunresort.com 4 2026-04-28 2026-07-20 ok
owner.royalsunresort.com 1 2026-04-15 2026-04-15 nxdomain
owners.royalsunresort.com 4 2026-04-15 2026-08-14 ok
dbt.royalsunresort.com 4 2026-04-19 2026-08-17 ok
payment.royalsunresort.com 8 2026-04-11 2026-08-07 ok
*.payment.royalsunresort.com 8 2026-04-11 2026-08-07 —
port.royalsunresort.com 4 2026-04-13 2026-08-12 ok
www.royalsunresort.com 4 2026-04-13 2026-08-11 ok

Programmatic access, with DNS A records: API GET /v1/hosts/royalsunresort.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/royalsunresort.com.