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 · 283 ms

HostCertsFirst seenLast seenDNS
buglerock.asia 9 2026-05-06 2026-10-06 ok
backend.buglerock.asia 3 2026-09-17 2026-09-17 ok
trade.buglerock.asia 1 2026-01-22 2026-01-22 ok
www.trade.buglerock.asia 1 2026-01-22 2026-01-22 nxdomain
bo.buglerock.asia 8 2025-08-04 2026-08-10 ok
www.bo.buglerock.asia 8 2025-08-04 2026-08-10 nxdomain
app.buglerock.asia 5 2026-05-15 2026-09-12 ok
fundiq.buglerock.asia 1 2026-09-17 2026-09-17 ok
www.buglerock.asia 9 2026-05-06 2026-10-06 ok

Programmatic access, with DNS A records: API GET /v1/hosts/buglerock.asia (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/buglerock.asia.