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 · 329 ms

HostCertsFirst seenLast seenDNS
mercadolibre.com.co 17 2025-10-17 2026-10-02 ok
*.mercadolibre.com.co 17 2025-10-17 2026-10-02 —
learninghub.mercadolibre.com.co 3 2025-07-08 2026-06-08 ok
*.realtime-prod.mercadolibre.com.co 3 2026-03-25 2026-08-25 —
realtime.mercadolibre.com.co 1 2025-07-03 2025-07-03 nxdomain
*.realtime.mercadolibre.com.co 1 2025-07-03 2025-07-03 —
realtime-test.mercadolibre.com.co 1 2025-07-09 2025-07-09 nxdomain
*.realtime-test.mercadolibre.com.co 1 2025-07-09 2025-07-09 —
*.realtime-dev.mercadolibre.com.co 1 2026-02-16 2026-02-16 —

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