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.

11 hosts · 313 ms

HostCertsFirst seenLast seenDNS
stayforlong.com 2 2025-10-04 2026-09-03 ok
*.stayforlong.com 2 2025-10-04 2026-09-03 —
static.stayforlong.com 2 2025-06-07 2026-05-08 ok
bundle.stayforlong.com 3 2026-05-03 2026-10-03 ok
booking.stayforlong.com 3 2026-06-11 2026-08-20 ok
help.stayforlong.com 4 2026-06-03 2026-10-02 ok
images.stayforlong.com 1 2025-11-30 2025-11-30 ok
links.stayforlong.com 2 2026-04-02 2026-09-02 ok
groups.stayforlong.com 8 2026-04-20 2026-08-10 ok
*.groups.stayforlong.com 8 2026-04-20 2026-08-10 —
careers.stayforlong.com 11 2026-05-08 2026-09-24 ok

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