Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

24 hosts · 241 ms

HostCertsFirst seenLast seen
halara.com 6 2025-08-29 2026-10-03
*.halara.com 8 2025-08-29 2026-10-03
ca.halara.com 10 2025-10-13 2026-09-13
*.ca.halara.com 5 2025-10-13 2026-09-13
collective-api.ca.halara.com 10 2025-11-14 2026-05-08
api-proxy.ca.halara.com 18 2025-10-13 2026-05-08
api.halara.com 20 2025-08-13 2026-05-08
collective-api.halara.com 20 2025-08-13 2026-05-08
api-proxy-crm.halara.com 14 2025-10-31 2026-05-08
jp.halara.com 4 2026-03-23 2026-05-08
eur.halara.com 10 2025-10-13 2026-09-13
*.eur.halara.com 5 2025-10-13 2026-09-13
collective-api.eur.halara.com 12 2025-11-08 2026-05-08
tracking.ib68569.edmmarket.eur.halara.com 5 2026-05-28 2026-09-23
tracking.ib39889.test.edmmarket.eur.halara.com 5 2026-05-31 2026-09-26
api-proxy.eur.halara.com 18 2025-10-13 2026-05-08
*.updates.halara.com 1 2026-06-11 2026-06-11
url6345.updates.halara.com 3 2026-06-05 2026-06-08
t.halara.com 20 2025-08-13 2026-05-08
tracking.ib15613.edmmarket.halara.com 4 2026-04-15 2026-08-11
seo-test.halara.com 2 2026-05-08 2026-05-08
tracking.ib87678.edmtest.halara.com 5 2026-05-08 2026-09-03
www.halara.com 6 2025-11-25 2026-05-08
api-proxy.halara.com 20 2025-08-13 2026-05-08

Programmatic access: API GET /v1/hosts/halara.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/halara.com.