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.

32 hosts · 362 ms

HostCertsFirst seenLast seenDNS
stelo.com 12 2026-04-14 2026-09-27 ok
*.stelo.com 7 2026-06-01 2026-09-27 —
stelo-stage.stelo.com 20 2026-04-28 2026-10-03 ok
account.stelo-stage.stelo.com 16 2026-04-28 2026-10-03 ok
stelo-release.stelo.com 13 2026-04-28 2026-09-24 ok
account.stelo-release.stelo.com 8 2026-04-28 2026-08-24 ok
cloud.email.stelo.com 2 2026-04-18 2026-09-19 ok
image.email.stelo.com 2 2026-01-21 2026-05-06 ok
click.email.stelo.com 2 2026-04-21 2026-09-22 ok
view.email.stelo.com 2 2026-04-18 2026-09-20 ok
stelo.stelo.com 6 2026-05-06 2026-09-01 ok
provider.stelo.com 14 2026-05-18 2026-09-13 ok
*.provider.stelo.com 11 2026-05-18 2026-09-13 —
stage.provider.stelo.com 4 2026-04-19 2026-08-17 ok
canary.provider.stelo.com 7 2026-05-06 2026-09-12 ok
*.canary.provider.stelo.com 2 2026-05-06 2026-05-06 —
chat1.us.stelo.com 8 2026-04-28 2026-08-24 ok
chat2.us.stelo.com 8 2026-04-28 2026-08-24 ok
chat3.us.stelo.com 8 2026-04-28 2026-08-24 ok
account.stelo.com 10 2026-04-28 2026-08-24 ok
stelo-test.stelo.com 20 2026-04-08 2026-10-02 ok
account.stelo-test.stelo.com 15 2026-04-28 2026-09-19 ok
www.stelo-test.stelo.com 20 2026-04-08 2026-10-02 ok
shop.au.stelo.com 1 2026-09-24 2026-09-24 ok
chat1.eu.stelo.com 2 2026-09-08 2026-09-08 ok
stelo-dev.stelo.com 13 2026-04-28 2026-09-07 ok
account.stelo-dev.stelo.com 13 2026-04-28 2026-09-23 ok
www.stelo.com 15 2026-04-14 2026-09-03 ok
stelo-canary.stelo.com 18 2026-05-02 2026-09-03 ok
*.stelo-canary.stelo.com 6 2026-05-02 2026-08-28 —
account.stelo-canary.stelo.com 9 2026-05-02 2026-08-28 ok
*.account.stelo-canary.stelo.com 6 2026-05-02 2026-08-28 —

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