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.

30 hosts · 344 ms

HostCertsFirst seenLast seenDNS
zola.com 5 2025-08-19 2026-08-20 ok
*.zola.com 9 2025-08-19 2026-10-02 —
okta.zola.com 11 2026-05-01 2026-10-03 ok
kb.zola.com 6 2026-04-11 2026-09-23 ok
dl-stage.zola.com 4 2026-05-09 2026-07-24 ok
welcome.zola.com 16 2026-04-11 2026-10-05 ok
homestore.zola.com 2 2025-06-11 2026-05-11 ok
*.homestore.zola.com 2 2025-06-11 2026-05-11 —
blog.zola.com 1 2026-02-21 2026-02-21 ok
www.blog.zola.com 1 2026-02-21 2026-02-21 nxdomain
tech.zola.com 1 2025-12-03 2025-12-03 ok
link.zola.com 7 2025-12-10 2026-10-01 ok
qa-link.zola.com 5 2026-05-11 2026-09-08 ok
www.link.zola.com 1 2025-12-10 2025-12-10 nxdomain
qa-babylink.zola.com 4 2026-04-14 2026-08-12 ok
api.web-qa-trk.zola.com 2 2026-01-23 2026-02-10 ok
evs.web-qa-trk.zola.com 2 2026-01-23 2026-02-10 ok
api.web-trk.zola.com 1 2026-02-10 2026-02-10 ok
evs.web-trk.zola.com 1 2026-02-10 2026-02-10 ok
eptrk.zola.com 6 2026-05-05 2026-10-03 ok
dl.zola.com 4 2026-05-09 2026-07-24 ok
learn.zola.com 8 2026-05-11 2026-09-06 ok
hotelblocks.zola.com 8 2026-06-07 2026-10-04 ok
domains.zola.com 12 2026-05-04 2026-08-30 ok
product.zola.com 4 2026-04-15 2026-09-23 ok
qa-sst.zola.com 5 2026-05-20 2026-09-17 ok
load.qa-sst.zola.com 18 2026-05-19 2026-09-14 ok
baby.zola.com 1 2026-02-09 2026-02-09 ok
*.baby.zola.com 1 2026-02-09 2026-02-09 —
privacy.zola.com 3 2026-03-24 2026-08-24 ok

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