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.

34 hosts · 255 ms

HostCertsFirst seenLast seenDNS
newwestern.com 44 2026-04-16 2026-09-24 ok
*.newwestern.com 18 2025-11-06 2026-09-14 —
signature-self-service2.newwestern.com 2 2026-04-16 2026-04-16 nxdomain
*.signature-self-service2.newwestern.com 2 2026-04-16 2026-04-16 —
*.e.newwestern.com 13 2026-04-12 2026-08-08 —
marketplace.newwestern.com 15 2026-02-18 2026-09-24 ok
*.marketplace.newwestern.com 17 2025-07-01 2026-09-24 —
qa-01.marketplace.newwestern.com 1 2025-12-25 2025-12-25 ok
*.qa-01.marketplace.newwestern.com 1 2025-12-25 2025-12-25 —
stage-01.marketplace.newwestern.com 1 2026-01-27 2026-01-27 ok
*.stage-01.marketplace.newwestern.com 1 2026-01-27 2026-01-27 —
dev-01.marketplace.newwestern.com 1 2026-01-14 2026-01-14 ok
api-dev-01.marketplace.newwestern.com 1 2025-08-21 2025-08-21 nodata
*.dev-01.marketplace.newwestern.com 1 2026-01-14 2026-01-14 —
api.marketplace.newwestern.com 2 2025-07-08 2026-06-08 ok
markeptlace.newwestern.com 1 2025-11-06 2025-11-06 nodata
self-service-signature.newwestern.com 11 2026-04-16 2026-08-12 ok
*.self-service-signature.newwestern.com 11 2026-04-16 2026-08-12 —
security-training.newwestern.com 8 2026-05-20 2026-09-17 ok
w2-launch.newwestern.com 2 2026-07-24 2026-07-24 ok
n8n.newwestern.com 13 2026-04-09 2026-10-03 nodata
*.n8n.newwestern.com 13 2026-04-09 2026-10-03 —
eso.newwestern.com 5 2026-04-25 2026-08-29 ok
developer.newwestern.com 1 2026-01-14 2026-01-14 ok
*.developer.newwestern.com 1 2026-01-14 2026-01-14 —
leads.newwestern.com 2 2026-05-25 2026-05-25 nodata
www.leads.newwestern.com 2 2026-05-25 2026-05-25 nodata
preferences.newwestern.com 10 2026-04-19 2026-08-15 ok
status.newwestern.com 4 2026-05-24 2026-05-24 nxdomain
*.t.newwestern.com 13 2026-04-12 2026-08-08 —
site.nw35test.newwestern.com 11 2026-06-05 2026-10-01 ok
developer-dev.newwestern.com 1 2026-01-12 2026-01-12 ok
*.developer-dev.newwestern.com 1 2026-01-12 2026-01-12 —
university.newwestern.com 2 2026-09-30 2026-09-30 ok

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