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.

14 hosts · 320 ms

HostCertsFirst seenLast seenDNS
starlight.org 4 2026-04-21 2026-08-24 ok
donate.starlight.org 10 2026-05-07 2026-09-03 ok
staging.starlight.org 5 2026-05-12 2026-09-21 ok
mi.starlight.org 2 2025-06-11 2026-05-11 ok
cisionone-email.starlight.org 5 2026-04-27 2026-08-25 ok
go.starlight.org 9 2026-04-20 2026-09-17 ok
giftshop.starlight.org 12 2026-05-18 2026-09-28 ok
games.starlight.org 3 2026-07-16 2026-09-16 ok
dev.starlight.org 5 2026-05-16 2026-09-16 ok
www.starlight.org 5 2026-04-22 2026-08-23 ok
pay.starlight.org 1 2026-05-18 2026-05-18 ok
www.pay.starlight.org 1 2026-05-18 2026-05-18 nxdomain
fundraise-your-way.starlight.org 16 2026-04-22 2026-08-18 ok
classy.starlight.org 5 2026-05-08 2026-09-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/starlight.org (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/starlight.org.