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.

11 hosts · 392 ms

HostCertsFirst seenLast seenDNS
giftlist.com 21 2026-04-15 2026-10-03 ok
*.giftlist.com 17 2025-07-19 2026-10-03 —
static.giftlist.com 3 2026-07-23 2026-09-14 ok
manage.giftlist.com 5 2026-04-17 2026-09-29 ok
img.giftlist.com 2 2026-06-26 2026-08-18 ok
staging.giftlist.com 5 2026-04-11 2026-09-19 ok
admin.giftlist.com 3 2026-05-05 2026-08-21 ok
staging-admin.giftlist.com 3 2026-05-06 2026-08-23 ok
status.giftlist.com 2 2026-09-02 2026-09-02 ok
*.status.giftlist.com 2 2026-09-02 2026-09-02 —
www.giftlist.com 1 2026-09-23 2026-09-23 ok

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