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 · 263 ms

HostCertsFirst seenLast seenDNS
nubupharma.com 10 2026-04-21 2026-09-09 ok
*.nubupharma.com 5 2026-04-21 2026-09-09 —
wholesale.nubupharma.com 4 2026-04-08 2026-08-11 ok
ninetynine.nubupharma.com 5 2026-05-07 2026-09-07 ok
email.mail.nubupharma.com 5 2026-05-25 2026-09-22 ok
prescribis.nubupharma.com 5 2026-05-26 2026-09-27 ok
links.nubupharma.com 10 2026-04-17 2026-08-13 ok
www.nubupharma.com 5 2026-05-01 2026-08-31 ok

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