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.

100 hosts (first page) · 371 ms

HostCertsFirst seenLast seenDNS
whatnot-hq.com 9 2026-01-17 2026-09-15 nodata
*.whatnot-hq.com 9 2026-01-17 2026-09-15 —
argo-workflows.eks1-usw2.usw2-load1.whatnot-hq.com 5 2026-05-01 2026-08-29 nxdomain
tools.eks1-use1.use1-data-load1.whatnot-hq.com 1 2026-09-14 2026-09-14 nxdomain
*.tools.eks1-use1.use1-data-load1.whatnot-hq.com 1 2026-09-14 2026-09-14 —
data.use1-data-load1.whatnot-hq.com 1 2026-09-15 2026-09-15 nodata
*.data.use1-data-load1.whatnot-hq.com 1 2026-09-15 2026-09-15 —
private.use1-data-load1.whatnot-hq.com 1 2026-09-15 2026-09-15 nodata
*.private.use1-data-load1.whatnot-hq.com 1 2026-09-15 2026-09-15 —
ml.use1-data-load1.whatnot-hq.com 1 2026-09-15 2026-09-15 nodata
*.ml.use1-data-load1.whatnot-hq.com 1 2026-09-15 2026-09-15 —
eks1-use1.load1.whatnot-hq.com 1 2025-12-11 2025-12-11 nodata
*.eks1-use1.load1.whatnot-hq.com 1 2025-12-11 2025-12-11 —
data.eks1-use1.load1.whatnot-hq.com 3 2026-07-24 2026-09-22 nxdomain
*.data.eks1-use1.load1.whatnot-hq.com 3 2026-07-24 2026-09-22 —
jako-tako.eks1-use1.load1.whatnot-hq.com 5 2026-05-04 2026-09-01 nxdomain
tools.eks1-use1.load1.whatnot-hq.com 3 2026-07-07 2026-09-05 nxdomain
mbe-tools.eks1-use1.load1.whatnot-hq.com 3 2026-06-22 2026-08-21 nxdomain
*.mbe-tools.eks1-use1.load1.whatnot-hq.com 3 2026-06-22 2026-08-21 —
*.tools.eks1-use1.load1.whatnot-hq.com 3 2026-07-07 2026-09-05 —
argo-workflows.eks1-use1.load1.whatnot-hq.com 5 2026-05-25 2026-09-22 nxdomain
vmselect.eks1-use1.load1.whatnot-hq.com 3 2026-04-19 2026-06-18 nxdomain
chaos-mesh-secondary.eks1-use1.load1.whatnot-hq.com 4 2026-04-13 2026-08-11 nxdomain
statsig-proxy.eks1-use1.load1.whatnot-hq.com 5 2026-05-04 2026-09-01 nxdomain
eks2-use1.load1.whatnot-hq.com 1 2025-12-11 2025-12-11 nodata
*.eks2-use1.load1.whatnot-hq.com 1 2025-12-11 2025-12-11 —
data.eks2-use1.load1.whatnot-hq.com 3 2026-07-24 2026-09-22 nxdomain
*.data.eks2-use1.load1.whatnot-hq.com 3 2026-07-24 2026-09-22 —
jako-tako.eks2-use1.load1.whatnot-hq.com 5 2026-05-04 2026-09-01 nxdomain
tools.eks2-use1.load1.whatnot-hq.com 3 2026-07-07 2026-09-05 nxdomain
mbe-tools.eks2-use1.load1.whatnot-hq.com 3 2026-06-22 2026-08-21 nxdomain
*.mbe-tools.eks2-use1.load1.whatnot-hq.com 3 2026-06-22 2026-08-21 —
*.tools.eks2-use1.load1.whatnot-hq.com 3 2026-07-07 2026-09-05 —
argo-workflows.eks2-use1.load1.whatnot-hq.com 5 2026-06-04 2026-10-02 nxdomain
vmselect.eks2-use1.load1.whatnot-hq.com 3 2026-04-19 2026-06-18 nxdomain
loadmanager-secondary.eks2-use1.load1.whatnot-hq.com 4 2026-04-16 2026-08-14 nxdomain
chaos-mesh-primary.eks2-use1.load1.whatnot-hq.com 4 2026-04-13 2026-08-11 nxdomain
loadmanager-primary.eks2-use1.load1.whatnot-hq.com 4 2026-04-16 2026-08-14 nxdomain
statsig-proxy.eks2-use1.load1.whatnot-hq.com 5 2026-05-09 2026-09-06 nxdomain
eks3-use1.load1.whatnot-hq.com 3 2026-01-13 2026-09-02 nxdomain
*.eks3-use1.load1.whatnot-hq.com 3 2026-01-13 2026-09-02 —
data.eks3-use1.load1.whatnot-hq.com 3 2026-07-27 2026-09-03 nxdomain
*.data.eks3-use1.load1.whatnot-hq.com 3 2026-07-27 2026-09-03 —
jako-tako.eks3-use1.load1.whatnot-hq.com 1 2026-09-03 2026-09-03 nxdomain
tools.eks3-use1.load1.whatnot-hq.com 3 2026-07-27 2026-09-03 nxdomain
mbe-tools.eks3-use1.load1.whatnot-hq.com 3 2026-07-27 2026-09-03 nxdomain
*.mbe-tools.eks3-use1.load1.whatnot-hq.com 3 2026-07-27 2026-09-03 —
*.tools.eks3-use1.load1.whatnot-hq.com 3 2026-07-27 2026-09-03 —
argo-workflows.eks3-use1.load1.whatnot-hq.com 1 2026-09-03 2026-09-03 nxdomain
chaos-mesh-secondary.eks3-use1.load1.whatnot-hq.com 1 2026-09-03 2026-09-03 nxdomain
loadmanager-secondary.eks3-use1.load1.whatnot-hq.com 4 2026-05-19 2026-07-18 nxdomain
loadmanager-primary.eks3-use1.load1.whatnot-hq.com 4 2026-05-19 2026-07-18 nxdomain
statsig-proxy.eks3-use1.load1.whatnot-hq.com 1 2026-09-03 2026-09-03 nxdomain
loadtest-use1.load1.whatnot-hq.com 1 2026-07-27 2026-07-27 nodata
*.loadtest-use1.load1.whatnot-hq.com 1 2026-07-27 2026-07-27 —
data.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 nxdomain
*.data.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 —
tools.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 nxdomain
mbe-tools.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 nxdomain
*.mbe-tools.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 —
*.tools.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 —
loadmanager-secondary.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 nxdomain
loadmanager-primary.loadtest-use1.load1.whatnot-hq.com 3 2026-07-28 2026-09-26 nxdomain
eks1-usw2.dev-usw2.whatnot-hq.com 3 2025-12-12 2026-08-28 nodata
*.eks1-usw2.dev-usw2.whatnot-hq.com 3 2025-12-12 2026-08-28 —
data.eks1-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 nxdomain
*.data.eks1-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 —
tools.eks1-usw2.dev-usw2.whatnot-hq.com 3 2026-08-05 2026-09-01 nxdomain
mbe-tools.eks1-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 nxdomain
*.mbe-tools.eks1-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 —
*.tools.eks1-usw2.dev-usw2.whatnot-hq.com 3 2026-08-05 2026-09-01 —
argo-workflows.eks1-usw2.dev-usw2.whatnot-hq.com 5 2026-04-16 2026-09-01 nxdomain
vmselect.eks1-usw2.dev-usw2.whatnot-hq.com 2 2026-05-18 2026-05-18 nxdomain
statsig-proxy.eks1-usw2.dev-usw2.whatnot-hq.com 6 2026-05-18 2026-09-01 nxdomain
eks2-usw2.dev-usw2.whatnot-hq.com 3 2025-12-12 2026-08-28 nodata
*.eks2-usw2.dev-usw2.whatnot-hq.com 3 2025-12-12 2026-08-28 —
data.eks2-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 nxdomain
*.data.eks2-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 —
tools.eks2-usw2.dev-usw2.whatnot-hq.com 2 2026-08-05 2026-09-04 nxdomain
mbe-tools.eks2-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 nxdomain
*.mbe-tools.eks2-usw2.dev-usw2.whatnot-hq.com 1 2026-09-28 2026-09-28 —
*.tools.eks2-usw2.dev-usw2.whatnot-hq.com 2 2026-08-05 2026-09-04 —
argo-workflows.eks2-usw2.dev-usw2.whatnot-hq.com 4 2026-04-16 2026-09-04 nxdomain
vmselect.eks2-usw2.dev-usw2.whatnot-hq.com 2 2026-05-18 2026-05-18 nxdomain
statsig-proxy.eks2-usw2.dev-usw2.whatnot-hq.com 5 2026-05-18 2026-09-04 nxdomain
github-docs-hub.whatnot-hq.com 6 2026-05-21 2026-09-19 ok
tools.eks1-use1.use1-data-prod.whatnot-hq.com 3 2026-07-27 2026-09-25 nxdomain
*.tools.eks1-use1.use1-data-prod.whatnot-hq.com 3 2026-07-27 2026-09-25 —
argo-workflows.eks1-use1.use1-data-prod.whatnot-hq.com 4 2026-07-08 2026-07-16 nxdomain
data.use1-data-prod.whatnot-hq.com 3 2026-07-23 2026-09-21 nodata
*.data.use1-data-prod.whatnot-hq.com 3 2026-07-23 2026-09-21 —
venice.use1-data-prod.whatnot-hq.com 2 2026-07-16 2026-07-16 nxdomain
private.use1-data-prod.whatnot-hq.com 5 2026-07-14 2026-09-14 nodata
*.private.use1-data-prod.whatnot-hq.com 5 2026-07-14 2026-09-14 —
ml.use1-data-prod.whatnot-hq.com 3 2026-07-23 2026-09-21 nodata
*.ml.use1-data-prod.whatnot-hq.com 3 2026-07-23 2026-09-21 —
eks1-use1.prod.whatnot-hq.com 1 2026-01-09 2026-01-09 nodata
*.eks1-use1.prod.whatnot-hq.com 1 2026-01-09 2026-01-09 —
jako-tako.eks1-use1.prod.whatnot-hq.com 5 2026-05-04 2026-09-01 nxdomain
tools.eks1-use1.prod.whatnot-hq.com 3 2026-07-10 2026-09-08 nxdomain

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/whatnot-hq.com.

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/whatnot-hq.com.