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 · 245 ms

HostCertsFirst seenLast seenDNS
nfil.in 5 2026-01-22 2026-06-01 ok
*.nfil.in 1 2026-01-22 2026-01-22 —
mafron.nfil.in 1 2026-01-21 2026-01-21 ok
api.mafron.nfil.in 5 2026-05-20 2026-09-16 ok
sap.nfil.in 3 2026-03-27 2026-09-25 nodata
*.sap.nfil.in 3 2026-03-27 2026-09-25 —
dess.nfil.in 2 2026-04-11 2026-04-12 ok
uat.nfil.in 2 2026-06-10 2026-06-10 ok
www.nfil.in 2 2026-06-01 2026-06-01 ok

Programmatic access, with DNS A records: API GET /v1/hosts/nfil.in (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/nfil.in.