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 · 333 ms

HostCertsFirst seenLast seenDNS
smolproducts.com 3 2025-09-28 2026-08-29 ok
*.smolproducts.com 2 2025-09-28 2026-08-29 —
data.smolproducts.com 2 2025-12-05 2025-12-26 ok
*.data.smolproducts.com 2 2025-12-05 2025-12-26 —
staging.data.smolproducts.com 1 2026-01-06 2026-01-06 nxdomain
*.staging.data.smolproducts.com 1 2026-01-06 2026-01-06 —
auth.data.smolproducts.com 1 2025-12-05 2025-12-05 nxdomain
gtm.load.smolproducts.com 4 2026-04-20 2026-08-18 ok
de.smolproducts.com 19 2026-05-19 2026-09-29 ok
customer-api.smolproducts.com 1 2025-12-14 2025-12-14 ok
nl.smolproducts.com 17 2026-05-18 2026-09-28 ok
login.smolproducts.com 10 2026-04-24 2026-08-21 ok
help.smolproducts.com 5 2026-05-29 2026-09-26 ok
recharge-webhooks.smolproducts.com 1 2025-12-14 2025-12-14 ok
careers.smolproducts.com 10 2026-06-04 2026-09-24 ok
us.smolproducts.com 18 2026-05-18 2026-09-29 ok
customer-impact.smolproducts.com 1 2025-12-14 2025-12-14 ok
myaccount.smolproducts.com 2 2026-04-01 2026-09-01 ok
checkout.smolproducts.com 5 2026-05-30 2026-09-27 ok

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