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.

10 hosts · 609 ms

HostCertsFirst seenLast seenDNS
boursobank.com 6 2026-06-04 2026-09-29 ok
*.boursobank.com 2 2026-03-09 2026-09-17 —
*.web-fr-portalbank-20.boursobank.com 5 2026-05-28 2026-09-22 —
*.web-fr-front-20.boursobank.com 5 2026-05-20 2026-09-14 —
*.web-fr-trading-01.boursobank.com 5 2026-05-21 2026-09-14 —
*.web-fr-subscription-01.boursobank.com 5 2026-05-24 2026-09-17 —
*.web-fr-showcase-21.boursobank.com 5 2026-04-26 2026-08-21 —
*.web-fr-trading-02.boursobank.com 4 2026-04-16 2026-08-10 —
*.web-fr-front-19.boursobank.com 5 2026-05-20 2026-09-14 —
api.boursobank.com 1 2026-04-22 2026-04-22 ok

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