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.

14 hosts · 235 ms

HostCertsFirst seenLast seenDNS
housinganywhere.com 4 2025-11-02 2026-09-04 ok
*.housinganywhere.com 5 2026-04-11 2026-09-11 —
eurunibarcelona.housinganywhere.com 5 2026-04-16 2026-09-30 ok
eurunigeneva.housinganywhere.com 4 2026-04-16 2026-09-23 ok
employee.housinganywhere.com 3 2026-05-18 2026-09-02 ok
eurunimunich.housinganywhere.com 5 2026-04-16 2026-09-27 ok
rbdf8uzi.housinganywhere.com 5 2026-04-23 2026-08-17 ok
info.housinganywhere.com 8 2026-05-10 2026-09-06 ok
app.housinganywhere.com 12 2026-04-13 2026-08-09 ok
s.housinganywhere.com 4 2026-05-19 2026-09-01 nodata
*.s.housinganywhere.com 4 2026-05-19 2026-09-01 —
emails.housinganywhere.com 2 2026-09-15 2026-09-15 nodata
*.emails.housinganywhere.com 2 2026-09-15 2026-09-15 —
www.housinganywhere.com 1 2025-11-02 2025-11-02 ok

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