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.

18 hosts · 226 ms

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HostCertsFirst seenLast seen
masmusculo.com 15 2026-04-21 2026-09-19
*.masmusculo.com 12 2026-04-21 2026-09-19
de.masmusculo.com 3 2026-06-27 2026-08-27
pre.masmusculo.com 5 2026-04-18 2026-08-18
nocf.masmusculo.com 5 2026-06-02 2026-09-30
prenocf.masmusculo.com 5 2026-06-01 2026-09-30
preshopi.masmusculo.com 3 2026-06-16 2026-08-15
helpdesk.masmusculo.com 1 2026-10-02 2026-10-02
email.masmusculo.com 5 2026-05-24 2026-09-21
team.masmusculo.com 1 2026-10-02 2026-10-02
img.info.masmusculo.com 12 2026-05-01 2026-08-27
r.info.masmusculo.com 5 2026-06-17 2026-09-05
recomendador.masmusculo.com 5 2026-05-24 2026-09-26
shopifyapps.masmusculo.com 5 2026-06-07 2026-10-03
cupones-shopifyapps.masmusculo.com 2 2026-06-02 2026-06-02
nutritionfacts.masmusculo.com 4 2026-06-10 2026-10-06
it.masmusculo.com 3 2026-06-27 2026-08-27
www.masmusculo.com 3 2026-06-27 2026-08-27

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