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.

29 hosts · 358 ms

HostCertsFirst seenLast seenDNS
appily.com 15 2026-05-23 2026-09-18 ok
*.appily.com 15 2026-05-23 2026-09-18 —
advance.appily.com 5 2025-11-02 2026-08-04 ok
p1.advance.appily.com 14 2026-05-15 2026-09-10 ok
p2.advance.appily.com 16 2026-04-13 2026-08-10 ok
p3.advance.appily.com 14 2026-04-13 2026-08-09 ok
p4.advance.appily.com 10 2026-05-08 2026-09-03 ok
qa.advance.appily.com 2 2026-03-19 2026-08-19 ok
email.advance.appily.com 2 2025-10-05 2026-09-05 ok
go.email.advance.appily.com 5 2026-05-26 2026-09-23 ok
www.email.advance.appily.com 2 2025-10-05 2026-09-05 ok
go.advance.appily.com 6 2025-12-07 2026-10-02 ok
www.advance.appily.com 3 2025-10-01 2026-09-01 ok
affiliate.appily.com 2 2026-02-21 2026-07-09 ok
tracking.appily.com 6 2025-07-19 2026-06-20 ok
match.appily.com 2 2025-06-18 2026-05-19 ok
*.match.appily.com 4 2025-06-18 2026-10-04 —
email.appily.com 2 2025-10-05 2026-09-05 ok
go.email.appily.com 5 2026-05-26 2026-09-23 ok
www.email.appily.com 2 2025-10-05 2026-09-05 ok
classroom.appily.com 1 2026-09-03 2026-09-03 ok
go.appily.com 8 2026-05-14 2026-09-09 ok
help.appily.com 4 2026-05-20 2026-07-18 ok
leads.appily.com 2 2025-09-01 2026-08-02 ok
*.leads.appily.com 2 2025-09-01 2026-08-02 —
tools-vibes.appily.com 12 2026-05-22 2026-09-17 ok
advance-cms.appily.com 6 2026-05-05 2026-08-31 ok
tools-fit.appily.com 6 2026-05-14 2026-09-09 ok
tools-art.appily.com 8 2026-05-01 2026-08-27 ok

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