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.

6 hosts · 284 ms

HostCertsFirst seenLast seenDNS
*.qa.nllservices.com 1 2026-01-10 2026-01-10 —
*.prod.nllservices.com 3 2025-08-14 2026-07-14 —
onenectar.prod.nllservices.com 2 2025-06-19 2026-05-20 ok
*.stg.nllservices.com 1 2026-01-16 2026-01-16 —
onenectar.stg.nllservices.com 2 2025-08-17 2026-07-18 ok
*.dev.nllservices.com 2 2025-07-17 2026-06-16 —

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