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.

23 hosts · 393 ms

HostCertsFirst seenLast seenDNS
converge-bio.com 25 2026-05-02 2026-08-29 ok
app.staging-use2.converge-bio.com 2 2026-04-12 2026-09-12 ok
data.converge-bio.com 1 2026-06-24 2026-06-24 ok
data.staging.converge-bio.com 1 2026-06-23 2026-06-23 ok
api.staging.converge-bio.com 1 2026-07-06 2026-07-06 nxdomain
cdn.staging.converge-bio.com 2 2026-07-06 2026-07-15 nxdomain
app.staging.converge-bio.com 1 2025-11-08 2025-11-08 ok
patent-extractor.staging.converge-bio.com 5 2026-05-25 2026-09-24 ok
experiments.staging.converge-bio.com 1 2026-04-16 2026-04-16 nxdomain
data-preview.staging.converge-bio.com 1 2026-10-04 2026-10-04 ok
auth.converge-bio.com 10 2026-04-14 2026-08-10 ok
link.converge-bio.com 2 2026-08-11 2026-08-11 ok
app-storybook.converge-bio.com 2 2026-07-16 2026-07-16 ok
login.converge-bio.com 10 2026-04-29 2026-08-25 ok
lp.converge-bio.com 6 2026-07-06 2026-09-03 ok
app.converge-bio.com 1 2025-11-11 2025-11-11 ok
patent-extractor.converge-bio.com 5 2026-05-25 2026-09-25 ok
experiments.converge-bio.com 1 2026-04-19 2026-04-19 nodata
test.converge-bio.com 1 2026-09-10 2026-09-10 ok
trust.converge-bio.com 1 2026-07-30 2026-07-30 ok
*.preview.converge-bio.com 1 2026-05-13 2026-05-13 —
cdn.preview.converge-bio.com 1 2026-07-15 2026-07-15 ok
www.converge-bio.com 9 2026-04-30 2026-08-28 ok

Programmatic access, with DNS A records: API GET /v1/hosts/converge-bio.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/converge-bio.com.