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.

90 hosts · 311 ms

HostCertsFirst seenLast seenDNS
resolve.ai 4 2025-08-31 2026-08-01 ok
*.resolve.ai 1 2025-11-18 2025-11-18 —
app0.resolve.ai 2 2026-03-17 2026-08-17 ok
*.app0.resolve.ai 2 2026-03-17 2026-08-17 —
vpn.app0.resolve.ai 2 2025-07-17 2026-06-17 nxdomain
corp.app0.resolve.ai 1 2025-12-23 2025-12-23 nodata
*.corp.app0.resolve.ai 1 2025-12-23 2025-12-23 —
dev0.resolve.ai 2 2026-02-28 2026-07-16 ok
*.dev0.resolve.ai 2 2026-02-28 2026-07-16 —
mst-test-madhu-0.dev0.resolve.ai 1 2026-07-22 2026-07-22 servfail
*.mst-test-madhu-0.dev0.resolve.ai 1 2026-07-22 2026-07-22 —
corp.mst-test-madhu-0.dev0.resolve.ai 1 2026-07-22 2026-07-22 nodata
*.corp.mst-test-madhu-0.dev0.resolve.ai 1 2026-07-22 2026-07-22 —
mst-e2e-20260722220553.dev0.resolve.ai 1 2026-07-22 2026-07-22 nodata
*.mst-e2e-20260722220553.dev0.resolve.ai 1 2026-07-22 2026-07-22 —
corp.mst-e2e-20260722220553.dev0.resolve.ai 1 2026-07-22 2026-07-22 nodata
*.corp.mst-e2e-20260722220553.dev0.resolve.ai 1 2026-07-22 2026-07-22 —
mst-dev0-clean-20260730174319.dev0.resolve.ai 1 2026-07-30 2026-07-30 nodata
*.mst-dev0-clean-20260730174319.dev0.resolve.ai 1 2026-07-30 2026-07-30 —
corp.mst-dev0-clean-20260730174319.dev0.resolve.ai 1 2026-07-30 2026-07-30 nodata
*.corp.mst-dev0-clean-20260730174319.dev0.resolve.ai 1 2026-07-30 2026-07-30 —
mst-e2e-20260723223529.dev0.resolve.ai 1 2026-07-23 2026-07-23 ok
*.mst-e2e-20260723223529.dev0.resolve.ai 1 2026-07-23 2026-07-23 —
corp.mst-e2e-20260723223529.dev0.resolve.ai 1 2026-07-23 2026-07-23 nodata
*.corp.mst-e2e-20260723223529.dev0.resolve.ai 1 2026-07-23 2026-07-23 —
mst-dev0-e2e-test-2-vishwa.dev0.resolve.ai 1 2026-07-27 2026-07-27 ok
*.mst-dev0-e2e-test-2-vishwa.dev0.resolve.ai 1 2026-07-27 2026-07-27 —
corp.mst-dev0-e2e-test-2-vishwa.dev0.resolve.ai 1 2026-07-27 2026-07-27 nodata
*.corp.mst-dev0-e2e-test-2-vishwa.dev0.resolve.ai 1 2026-07-27 2026-07-27 —
mst-dev0-vishwa-e2e.dev0.resolve.ai 1 2026-07-26 2026-07-26 ok
*.mst-dev0-vishwa-e2e.dev0.resolve.ai 1 2026-07-26 2026-07-26 —
corp.mst-dev0-vishwa-e2e.dev0.resolve.ai 1 2026-07-26 2026-07-26 nodata
*.corp.mst-dev0-vishwa-e2e.dev0.resolve.ai 1 2026-07-26 2026-07-26 —
vpn.dev0.resolve.ai 1 2026-05-09 2026-05-09 nxdomain
corp.dev0.resolve.ai 1 2025-12-23 2025-12-23 nodata
*.corp.dev0.resolve.ai 1 2025-12-23 2025-12-23 —
302403761805.resolve.ai 1 2026-07-18 2026-07-18 nxdomain
*.302403761805.resolve.ai 1 2026-07-18 2026-07-18 —
corp.302403761805.resolve.ai 1 2026-07-18 2026-07-18 nxdomain
*.corp.302403761805.resolve.ai 1 2026-07-18 2026-07-18 —
circadia.resolve.ai 1 2026-01-28 2026-01-28 nodata
*.circadia.resolve.ai 1 2026-01-28 2026-01-28 —
vpn.circadia.resolve.ai 1 2026-01-29 2026-01-29 nxdomain
corp.circadia.resolve.ai 1 2026-01-28 2026-01-28 nodata
*.corp.circadia.resolve.ai 1 2026-01-28 2026-01-28 —
website-prod.resolve.ai 5 2025-08-12 2026-07-13 ok
*.website-prod.resolve.ai 5 2025-08-12 2026-07-13 —
explore.resolve.ai 1 2026-09-22 2026-09-22 ok
staging-website.resolve.ai 3 2025-08-20 2026-07-21 ok
*.staging-website.resolve.ai 3 2025-08-20 2026-07-21 —
gtm.staging-website.resolve.ai 1 2026-08-10 2026-08-10 ok
hello.resolve.ai 8 2026-04-14 2026-08-10 ok
consolidated-otel-demo.resolve.ai 1 2025-10-08 2025-10-08 nodata
*.consolidated-otel-demo.resolve.ai 1 2025-10-08 2025-10-08 —
vpn.consolidated-otel-demo.resolve.ai 2 2025-10-08 2026-09-08 nxdomain
corp.consolidated-otel-demo.resolve.ai 1 2026-02-13 2026-02-13 nodata
*.corp.consolidated-otel-demo.resolve.ai 1 2026-02-13 2026-02-13 —
ditto.resolve.ai 1 2026-03-30 2026-03-30 nodata
*.ditto.resolve.ai 1 2026-03-30 2026-03-30 —
vpn.ditto.resolve.ai 3 2026-03-30 2026-08-30 nxdomain
corp.ditto.resolve.ai 1 2026-03-30 2026-03-30 nodata
*.corp.ditto.resolve.ai 1 2026-03-30 2026-03-30 —
app.resolve.ai 1 2026-01-08 2026-01-08 ok
*.app.resolve.ai 1 2026-01-08 2026-01-08 —
corp.app.resolve.ai 1 2026-01-08 2026-01-08 nodata
*.corp.app.resolve.ai 1 2026-01-08 2026-01-08 —
corp.resolve.ai 2 2026-08-19 2026-08-19 nodata
*.corp.resolve.ai 2 2026-08-19 2026-08-19 —
vpn.corp.resolve.ai 1 2026-08-31 2026-08-31 nxdomain
corp.corp.resolve.ai 2 2026-08-19 2026-08-19 nodata
*.corp.corp.resolve.ai 2 2026-08-19 2026-08-19 —
docs.resolve.ai 8 2026-05-25 2026-08-18 ok
status.resolve.ai 1 2026-08-12 2026-08-12 ok
circadia-extract.resolve.ai 1 2026-02-10 2026-02-10 nodata
*.circadia-extract.resolve.ai 1 2026-02-10 2026-02-10 —
corp.circadia-extract.resolve.ai 1 2026-02-10 2026-02-10 nodata
*.corp.circadia-extract.resolve.ai 1 2026-02-10 2026-02-10 —
meet.resolve.ai 2 2026-03-27 2026-08-27 ok
rocket.resolve.ai 2 2025-07-12 2026-06-12 ok
*.rocket.resolve.ai 2 2025-07-12 2026-06-12 —
vpn.rocket.resolve.ai 2 2025-07-12 2026-06-12 nxdomain
corp.rocket.resolve.ai 1 2025-12-23 2025-12-23 nodata
*.corp.rocket.resolve.ai 1 2025-12-23 2025-12-23 —
groot.resolve.ai 2 2026-04-08 2026-09-08 ok
*.groot.resolve.ai 2 2026-04-08 2026-09-08 —
vpn.groot.resolve.ai 2 2026-04-08 2026-09-08 nxdomain
corp.groot.resolve.ai 2 2026-04-08 2026-09-08 nodata
*.corp.groot.resolve.ai 2 2026-04-08 2026-09-08 —
trust.resolve.ai 10 2026-06-04 2026-09-30 ok
www.resolve.ai 2 2025-08-31 2026-08-01 ok

Programmatic access, with DNS A records: API GET /v1/hosts/resolve.ai (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/resolve.ai.