Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

8 hosts · 227 ms

HostCertsFirst seenLast seen
lelior.com 56 2026-04-21 2026-10-08
*.lelior.com 13 2026-04-21 2026-09-18
marketing.lelior.com 5 2026-05-12 2026-09-27
api.lelior.com 30 2026-04-21 2026-08-17
cdn.lelior.com 12 2026-04-21 2026-08-17
ashburn.lelior.com 8 2026-06-11 2026-10-07
sms.lelior.com 6 2026-05-10 2026-09-05
www.lelior.com 13 2026-04-24 2026-10-08

Programmatic access: API GET /v1/hosts/lelior.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/lelior.com.