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.

55 hosts · 399 ms

HostCertsFirst seenLast seenDNS
vastdata.com 11 2026-02-01 2026-09-03 ok
*.vastdata.com 10 2025-09-11 2026-09-03 —
vast-research-assistant-151.vastdata.com 2 2026-08-31 2026-08-31 —
upload.cloud-qa.vastdata.com 4 2026-04-18 2026-10-02 ok
api.cloud-qa.vastdata.com 3 2026-04-27 2026-08-17 ok
selab.vastdata.com 4 2025-08-03 2026-08-25 nodata
*.selab.vastdata.com 6 2025-08-03 2026-08-25 —
kb.vastdata.com 16 2026-05-18 2026-09-13 ok
brand.vastdata.com 1 2026-02-17 2026-02-17 ok
vastforward.vastdata.com 10 2026-04-12 2026-08-08 ok
cloud.vastdata.com 3 2025-08-20 2026-08-25 nodata
*.cloud.vastdata.com 5 2025-08-20 2026-08-25 —
upload.cloud.vastdata.com 3 2026-05-08 2026-08-24 ok
api.cloud.vastdata.com 3 2026-05-29 2026-09-14 ok
docs-be.vastdata.com 1 2025-12-22 2025-12-22 nxdomain
www.docs-be.vastdata.com 1 2025-12-22 2025-12-22 nxdomain
callhome.vastdata.com 1 2025-12-27 2025-12-27 ok
staging.vastdata.com 5 2026-05-06 2026-09-10 ok
api.cloud-staging.vastdata.com 3 2026-05-21 2026-09-06 ok
storybook.vastdata.com 3 2026-06-13 2026-08-13 ok
upload.cloud-devel.vastdata.com 3 2026-04-26 2026-08-14 ok
api.cloud-devel.vastdata.com 3 2026-05-06 2026-08-25 ok
*.sol.vastdata.com 1 2026-08-02 2026-08-02 —
vpn-var.vastdata.com 3 2026-04-09 2026-06-08 ok
uploads.vastdata.com 5 2026-05-04 2026-09-07 ok
email.badges.vastdata.com 1 2026-09-14 2026-09-14 ok
vastnfs.vastdata.com 1 2026-02-02 2026-02-02 ok
azure.polaris.vastdata.com 1 2026-07-30 2026-07-30 nxdomain
*.azure.polaris.vastdata.com 1 2026-07-30 2026-07-30 —
*.oci.polaris.vastdata.com 2 2026-09-15 2026-09-15 —
gcp.polaris.vastdata.com 1 2025-11-10 2025-11-10 nxdomain
*.gcp.polaris.vastdata.com 1 2025-11-10 2025-11-10 —
docs.polaris.vastdata.com 1 2026-09-01 2026-09-01 ok
*.aws.polaris.vastdata.com 3 2026-03-12 2026-08-12 —
license.vocls.vastdata.com 3 2026-05-18 2026-09-03 ok
nfs-over-mtls.vastdata.com 2 2026-04-27 2026-04-27 nxdomain
cosmos.vastdata.com 11 2026-04-28 2026-08-24 ok
cloud-devops.vastdata.com 3 2025-08-20 2026-08-25 nodata
*.cloud-devops.vastdata.com 5 2025-08-20 2026-08-25 —
api.cloud-devops.vastdata.com 3 2026-04-30 2026-08-17 ok
storage-direct-demo.cloud-devops.vastdata.com 5 2026-04-14 2026-09-23 ok
webinars.vastdata.com 11 2026-05-22 2026-09-17 ok
partners.vastdata.com 1 2026-02-17 2026-02-17 ok
artifacts.vastdata.com 4 2026-08-11 2026-09-03 nxdomain
events.vastdata.com 5 2026-06-05 2026-10-02 ok
ai-assessment.vastdata.com 4 2026-04-15 2026-08-16 ok
support.vastdata.com 15 2026-04-15 2026-09-23 ok
test-support.vastdata.com 18 2026-04-30 2026-08-27 ok
vastronaut.vastdata.com 5 2026-04-24 2026-08-26 ok
license.vocls-dev.vastdata.com 6 2026-04-15 2026-09-27 ok
preview.vastdata.com 5 2026-05-20 2026-09-21 ok
www.vastdata.com 5 2026-04-29 2026-08-30 ok
registry.vastdata.com 2 2026-08-11 2026-08-11 ok
community.vastdata.com 4 2026-04-16 2026-08-14 ok
university.vastdata.com 4 2026-06-15 2026-10-06 ok

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