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.

9 hosts · 255 ms

HostCertsFirst seenLast seenDNS
kiwitron.com 7 2026-04-24 2026-09-04 ok
wms-staging.toyota.kiwitron.com 2 2025-11-04 2026-10-05 ok
wms.toyota.kiwitron.com 2 2025-11-04 2026-10-05 ok
api-staging.isite.kiwitron.com 2 2025-10-19 2026-09-19 ok
api.isite.kiwitron.com 2 2025-10-19 2026-09-19 ok
sf.kiwitron.com 20 2026-06-04 2026-09-30 ok
r.kiwitron.com 5 2026-05-21 2026-09-23 ok
snipeit.kiwitron.com 1 2025-12-01 2025-12-01 nodata
www.kiwitron.com 5 2026-04-24 2026-09-04 ok

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