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.

15 hosts · 235 ms

HostCertsFirst seenLast seen
nugenix.com 48 2026-04-12 2026-10-06
*.nugenix.com 48 2026-04-12 2026-10-06
i2.nugenix.com 3 2026-05-20 2026-09-04
*.e.nugenix.com 3 2026-03-14 2026-08-14
i.nugenix.com 3 2026-05-16 2026-09-01
signup.nugenix.com 6 2026-06-29 2026-08-27
q.nugenix.com 15 2026-04-25 2026-08-24
fn.us.q.nugenix.com 10 2026-05-07 2026-09-13
fn.eu.q.nugenix.com 4 2026-04-14 2026-08-12
resources.nugenix.com 3 2026-03-09 2026-08-09
email.emails.nugenix.com 5 2026-05-30 2026-09-26
sms.nugenix.com 20 2026-05-14 2026-09-09
email.receipts.nugenix.com 5 2026-05-30 2026-09-26
internalt.nugenix.com 1 2026-08-13 2026-08-13
load.internalt.nugenix.com 2 2026-08-13 2026-08-13

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