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 · 266 ms

HostCertsFirst seenLast seenDNS
speedy.bg 3 2025-08-07 2026-08-25 ok
*.speedy.bg 3 2025-08-07 2026-08-25 —
apps.okd.speedy.bg 1 2025-11-14 2025-11-14 nxdomain
*.apps.okd.speedy.bg 1 2025-11-14 2025-11-14 —
apps.okd-stg.speedy.bg 1 2026-01-22 2026-01-22 nxdomain
*.apps.okd-stg.speedy.bg 1 2026-01-22 2026-01-22 —
minio.speedy.bg 2 2025-09-10 2026-10-05 ok
*.minio.speedy.bg 2 2025-09-10 2026-10-05 —
bot-translator.speedy.bg 3 2026-04-30 2026-08-22 ok

Programmatic access, with DNS A records: API GET /v1/hosts/speedy.bg (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/speedy.bg.