Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

29 hosts · 243 ms

HostCertsFirst seenLast seen
luminpdf.com 35 2026-04-28 2026-09-29
*.luminpdf.com 32 2026-04-29 2026-09-29
*.ota.luminpdf.com 8 2026-04-28 2026-08-24
static.luminpdf.com 10 2026-04-21 2026-08-17
lumin-email-static.luminpdf.com 9 2026-05-23 2026-09-18
cf.cookie.luminpdf.com 2 2025-09-04 2026-08-05
static-staging.luminpdf.com 10 2026-04-21 2026-08-17
identity-staging.luminpdf.com 8 2026-04-21 2026-08-17
marketing.luminpdf.com 6 2026-04-25 2026-08-20
auth.luminpdf.com 8 2026-05-10 2026-09-05
feedback.luminpdf.com 5 2026-05-30 2026-08-29
email.luminpdf.com 6 2026-05-07 2026-10-06
email.hoan.luminpdf.com 6 2026-05-07 2026-10-07
mobile-sign.luminpdf.com 3 2026-06-20 2026-09-04
l.info.luminpdf.com 11 2026-04-29 2026-08-25
l.hello.luminpdf.com 11 2026-04-29 2026-08-25
mobile-app.luminpdf.com 4 2026-05-15 2026-07-30
labs.luminpdf.com 3 2026-07-30 2026-09-30
developers.luminpdf.com 18 2026-05-21 2026-09-16
status.luminpdf.com 6 2026-05-07 2026-10-13
oai-chat.luminpdf.com 5 2026-05-03 2026-09-03
kratos-auth-test.luminpdf.com 11 2026-05-24 2026-09-19
static-dev.luminpdf.com 10 2026-04-22 2026-08-18
auth-dev.luminpdf.com 6 2026-05-06 2026-09-01
mobile-sign-dev.luminpdf.com 4 2026-05-15 2026-07-30
mobile-app-dev.luminpdf.com 3 2026-06-05 2026-08-20
kratos-dev.luminpdf.com 6 2026-04-26 2026-08-22
*.preview.luminpdf.com 6 2026-05-06 2026-09-01
auth-sandbox.luminpdf.com 6 2026-05-25 2026-09-21

Programmatic access: API GET /v1/hosts/luminpdf.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/luminpdf.com.