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.

58 hosts · 403 ms

HostCertsFirst seenLast seenDNS
workos.com 31 2026-06-04 2026-10-02 ok
*.workos.com 23 2026-06-06 2026-10-02 —
404.workos.com 4 2026-09-08 2026-09-10 nodata
*.404.workos.com 4 2026-09-08 2026-09-10 —
lw-spring-24.workos.com 5 2026-09-08 2026-09-19 ok
*.lw-spring-24.workos.com 5 2026-09-08 2026-09-19 —
lw-spring-25.workos.com 12 2026-04-25 2026-08-21 ok
lw-fall-25.workos.com 8 2026-05-08 2026-09-10 ok
*.lw-fall-25.workos.com 4 2026-09-08 2026-09-10 —
lw-summer-25.workos.com 7 2026-06-03 2026-09-29 ok
lw-spring-26.workos.com 8 2026-05-06 2026-09-10 ok
*.lw-spring-26.workos.com 4 2026-09-08 2026-09-10 —
compliance.workos.com 2 2025-09-06 2026-08-07 ok
anthropic-setup-example.workos.com 4 2026-05-20 2026-08-13 ok
explore.workos.com 5 2026-06-02 2026-10-03 ok
store.workos.com 4 2026-04-11 2026-08-13 ok
dotcom-cf.workos.com 8 2026-09-02 2026-09-04 nodata
*.dotcom-cf.workos.com 4 2026-09-02 2026-09-04 —
staging.dotcom-cf.workos.com 2 2026-09-03 2026-09-03 ok
*.staging.dotcom-cf.workos.com 2 2026-09-03 2026-09-03 —
draft.dotcom-cf.workos.com 2 2026-09-03 2026-09-03 ok
*.draft.dotcom-cf.workos.com 2 2026-09-03 2026-09-03 —
pkg.workos.com 1 2026-09-08 2026-09-08 ok
ask.workos.com 8 2026-04-10 2026-09-05 ok
admin-portal.workos.com 1 2026-04-16 2026-04-16 nxdomain
dotcom.workos.com 13 2026-05-10 2026-09-15 ok
*.dotcom.workos.com 6 2026-09-08 2026-09-15 —
draft.dotcom.workos.com 2 2026-09-13 2026-09-13 ok
*.draft.dotcom.workos.com 2 2026-09-13 2026-09-13 —
cdn.workos.com 2 2025-08-31 2026-07-30 ok
marketing.cdn.workos.com 9 2026-04-16 2026-09-20 ok
*.marketing.cdn.workos.com 5 2026-09-09 2026-09-20 —
signin.workos.com 10 2026-04-27 2026-08-24 ok
frontend-apps-multi-region.workos.com 2 2026-02-19 2026-07-22 ok
dashboard-production.workos.com 4 2026-05-21 2026-07-21 ok
og-images-production.workos.com 4 2026-04-11 2026-08-16 ok
go.workos.com 5 2026-04-24 2026-08-29 ok
docs-astro.workos.com 13 2026-06-04 2026-09-08 ok
*.docs-astro.workos.com 13 2026-06-04 2026-09-08 —
shop.workos.com 9 2026-04-16 2026-10-02 ok
*.shop.workos.com 5 2026-09-08 2026-10-02 —
auth.shop.workos.com 11 2026-06-01 2026-09-27 ok
signin.shop.workos.com 9 2026-06-01 2026-09-27 ok
analytics.workos.com 2 2025-06-13 2026-05-13 ok
api.analytics.workos.com 2 2026-04-18 2026-09-18 nodata
links.workos.com 2 2026-08-13 2026-08-13 ok
cms.workos.com 10 2026-05-11 2026-09-24 ok
*.cms.workos.com 5 2026-09-08 2026-09-24 —
videos.workos.com 2 2025-07-17 2026-06-17 ok
frontend-apps.workos.com 2 2025-08-11 2026-07-12 ok
status.workos.com 4 2026-04-20 2026-08-17 ok
mcp-night.workos.com 2 2026-05-06 2026-05-06 nodata
trust.workos.com 6 2026-05-10 2026-09-05 ok
checkout.workos.com 15 2026-04-12 2026-09-24 ok
webflow.workos.com 6 2026-05-03 2026-08-29 ok
gateway.workos.com 8 2026-06-25 2026-08-28 nodata
*.gateway.workos.com 8 2026-06-25 2026-08-28 —
frontend-apps-temporary.workos.com 1 2026-02-12 2026-02-12 nxdomain

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