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.

17 hosts · 334 ms

HostCertsFirst seenLast seenDNS
plst.com 6 2026-03-19 2026-09-24 ok
*.plst.com 8 2025-08-06 2026-09-24 —
m.ma.plst.com 2 2025-09-30 2026-08-31 ok
res.ma.plst.com 2 2025-09-29 2026-08-30 ok
t.ma.plst.com 2 2025-09-30 2026-08-31 ok
digital-signage.plst.com 1 2026-05-09 2026-05-09 ok
staging-digital-signage.plst.com 2 2026-05-08 2026-05-22 ok
internal-api-digital-signage.plst.com 2 2026-05-09 2026-06-10 ok
staging-internal-api-digital-signage.plst.com 3 2026-05-08 2026-06-04 ok
digital-signage-org.plst.com 3 2026-06-10 2026-08-13 ok
staging-digital-signage-org.plst.com 6 2026-06-04 2026-10-01 ok
api-digital-signage-org.plst.com 3 2026-05-10 2026-08-26 ok
staging-api-digital-signage-org.plst.com 4 2026-05-12 2026-08-28 ok
mgmttpu.ap-northeast-1.official.plst.com 3 2025-09-12 2026-08-13 ok
queue-jp.plst.com 3 2026-04-07 2026-09-07 ok
s.plst.com 4 2026-04-16 2026-09-01 ok
mta-sts.plst.com 1 2026-01-22 2026-01-22 nxdomain

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