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.

7 hosts · 306 ms

HostCertsFirst seenLast seenDNS
investinet.waythru.com 4 2025-09-28 2026-08-30 ok
api.investinet.waythru.com 10 2025-09-28 2026-08-30 ok
www.api.investinet.waythru.com 6 2026-03-17 2026-08-17 ok
www.investinet.waythru.com 2 2026-03-30 2026-08-30 nodata
pathway.investinet.waythru.com 4 2025-09-28 2026-08-29 ok
api.pathway.investinet.waythru.com 8 2025-09-28 2026-08-29 ok
www.pathway.investinet.waythru.com 2 2026-03-29 2026-08-29 nodata

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