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.

39 hosts · 398 ms

HostCertsFirst seenLast seenDNS
gaia.com 10 2025-06-27 2026-07-23 ok
*.gaia.com 17 2025-06-27 2026-08-25 —
dd.gaia.com 4 2026-04-19 2026-09-16 ok
webvpn.vmprod.gaia.com 2 2025-07-09 2026-08-03 ok
www.webvpn.vmprod.gaia.com 2 2025-07-09 2026-08-03 nxdomain
marketplace.gaia.com 13 2026-04-13 2026-09-25 ok
de.gaia.com 1 2025-10-16 2025-10-16 nodata
*.de.gaia.com 1 2025-10-16 2025-10-16 —
image.gaia.com 16 2026-05-08 2026-09-03 ok
*.cluster01.stage.gaia.com 2 2026-05-05 2026-05-18 —
link.weare.gaia.com 19 2026-04-29 2026-08-31 ok
awe.gaia.com 3 2025-10-08 2026-09-08 ok
channeling.gaia.com 3 2026-06-09 2026-06-09 nxdomain
ph.gaia.com 12 2026-06-04 2026-10-01 ok
mi.gaia.com 4 2026-04-10 2026-09-20 ok
link.gaia.com 17 2026-05-02 2026-08-30 ok
cs-link.gaia.com 4 2026-04-21 2026-09-06 ok
emersion.gaia.com 2 2026-04-13 2026-04-13 nxdomain
*.cluster01.production.gaia.com 3 2025-06-27 2026-05-18 —
*.cluster02.production.gaia.com 1 2025-06-27 2025-06-27 —
*.cluster03.production.gaia.com 1 2025-06-27 2025-06-27 —
webvpn.gaia.com 3 2026-03-20 2026-10-01 ok
www.webvpn.gaia.com 3 2026-03-20 2026-10-01 nxdomain
go.gaia.com 4 2026-05-14 2026-07-29 ok
shop.gaia.com 14 2026-05-22 2026-09-28 ok
ir.gaia.com 4 2026-04-18 2026-08-17 ok
metrics.gaia.com 1 2026-01-04 2026-01-04 ok
stgmetrics.gaia.com 1 2026-01-05 2026-01-05 ok
analytics.gaia.com 3 2026-05-26 2026-09-09 ok
link.mpemails.gaia.com 4 2026-04-13 2026-08-11 ok
partners.gaia.com 11 2026-06-01 2026-09-27 ok
notify.partners.gaia.com 2 2026-06-03 2026-06-03 nxdomain
*.notify.partners.gaia.com 2 2026-06-03 2026-06-03 —
get.gaia.com 6 2026-07-06 2026-09-03 ok
summit.gaia.com 1 2026-04-18 2026-04-18 nxdomain
helpit.gaia.com 5 2026-05-03 2026-08-31 ok
clicks.notify.gaia.com 2 2026-03-09 2026-08-09 ok
contentlibrary.gaia.com 1 2026-02-19 2026-02-19 ok
clicks.community.gaia.com 2 2026-03-09 2026-08-09 ok

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