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.

16 hosts · 277 ms

HostCertsFirst seenLast seenDNS
taboola.com 3 2025-12-15 2025-12-17 ok
*.taboola.com 3 2025-12-15 2025-12-17 —
jira.taboola.com 5 2026-05-08 2026-09-04 ok
trc.taboola.com 2 2025-12-15 2025-12-15 ok
*.trc.taboola.com 2 2025-12-15 2025-12-15 —
office.taboola.com 2 2025-12-16 2025-12-17 nodata
*.office.taboola.com 2 2025-12-16 2025-12-17 —
servicedesk.taboola.com 10 2026-05-27 2026-09-24 ok
email.newsroom.taboola.com 1 2026-08-10 2026-08-10 ok
pubhelp.taboola.com 1 2025-12-22 2025-12-22 ok
signup.taboola.com 1 2025-12-02 2025-12-02 ok
bidder.taboola.com 1 2025-12-17 2025-12-17 nodata
*.bidder.taboola.com 1 2025-12-17 2025-12-17 —
developers.taboola.com 10 2026-06-01 2026-09-27 ok
investors.taboola.com 3 2025-10-14 2026-09-23 ok
interact.taboola.com 1 2025-12-02 2025-12-02 ok

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