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.

8 hosts · 244 ms

HostCertsFirst seenLast seenDNS
mercadolibre.co.cr 7 2025-10-08 2026-10-03 ok
*.mercadolibre.co.cr 7 2025-10-08 2026-10-03 —
*.realtime-prod.mercadolibre.co.cr 3 2026-03-25 2026-08-25 —
realtime.mercadolibre.co.cr 1 2025-07-12 2025-07-12 nxdomain
*.realtime.mercadolibre.co.cr 1 2025-07-12 2025-07-12 —
realtime-test.mercadolibre.co.cr 1 2025-07-10 2025-07-10 nxdomain
*.realtime-test.mercadolibre.co.cr 1 2025-07-10 2025-07-10 —
*.realtime-dev.mercadolibre.co.cr 1 2026-02-16 2026-02-16 —

Programmatic access, with DNS A records: API GET /v1/hosts/mercadolibre.co.cr (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/mercadolibre.co.cr.