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 · 317 ms

Download CSV
HostCertsFirst seenLast seen
novecore.com 1 2025-11-10 2025-11-10
blog.novecore.com 9 2026-04-24 2026-10-19
api.novecore.com 1 2025-11-10 2025-11-10
app.novecore.com 13 2026-05-23 2026-10-02
updates.novecore.com 8 2026-05-22 2026-09-28
status.novecore.com 7 2026-05-05 2026-09-29
www.novecore.com 1 2025-11-10 2025-11-10
my.novecore.com 4 2026-06-13 2026-10-12

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