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 · 307 ms

HostCertsFirst seenLast seenDNS
mercadolibre.com.ar 8 2025-10-06 2026-09-30 ok
*.mercadolibre.com.ar 8 2025-10-06 2026-09-30 —
alejandria.mercadolibre.com.ar 1 2025-11-23 2025-11-23 nxdomain
learninghub.mercadolibre.com.ar 2 2025-07-04 2026-06-04 ok
*.realtime-prod.mercadolibre.com.ar 3 2026-03-25 2026-08-25 —
*.realtime.mercadolibre.com.ar 1 2025-06-12 2025-06-12 —
realtime-test.mercadolibre.com.ar 1 2025-06-12 2025-06-12 nxdomain
*.realtime-test.mercadolibre.com.ar 1 2025-06-16 2025-06-16 —
*.realtime-dev.mercadolibre.com.ar 1 2026-02-16 2026-02-16 —

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