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.

50 hosts · 431 ms

HostCertsFirst seenLast seenDNS
alphatauri.com 4 2025-10-02 2026-07-28 ok
*.alphatauri.com 2 2026-05-15 2026-06-05 —
scuderia.alphatauri.com 4 2025-11-18 2026-09-20 ok
stage-scuderia.alphatauri.com 3 2025-11-18 2026-09-20 ok
www.stage-scuderia.alphatauri.com 3 2025-11-18 2026-09-20 nxdomain
www.scuderia.alphatauri.com 4 2025-11-18 2026-09-20 nxdomain
b2b-shop-d.alphatauri.com 4 2026-06-25 2026-08-26 ok
prod.alphatauri.com 1 2026-06-03 2026-06-03 ok
www.prod.alphatauri.com 1 2026-06-03 2026-06-03 nxdomain
customerservice.alphatauri.com 5 2025-10-15 2026-09-29 ok
stage.alphatauri.com 2 2026-05-19 2026-10-05 ok
smartedit-stage.alphatauri.com 1 2026-09-04 2026-09-04 ok
www.smartedit-stage.alphatauri.com 1 2026-09-04 2026-09-04 nxdomain
account.stage.alphatauri.com 1 2026-06-11 2026-06-11 ok
www.stage.alphatauri.com 2 2026-05-19 2026-10-05 nxdomain
cdp-api.alphatauri.com 1 2026-01-16 2026-01-16 ok
www.cdp-api.alphatauri.com 1 2026-01-16 2026-01-16 nxdomain
lookbook.alphatauri.com 2 2025-11-19 2026-09-21 ok
www.lookbook.alphatauri.com 2 2025-11-19 2026-09-21 nxdomain
bm.alphatauri.com 1 2025-12-02 2025-12-02 ok
qm.alphatauri.com 1 2026-02-08 2026-02-08 ok
rm.alphatauri.com 2 2025-09-17 2026-08-18 ok
b2b-login.alphatauri.com 2 2025-10-10 2026-08-12 ok
www.b2b-login.alphatauri.com 2 2025-10-10 2026-08-12 nxdomain
go.alphatauri.com 1 2026-08-12 2026-08-12 ok
cdp.alphatauri.com 1 2026-01-16 2026-01-16 ok
www.cdp.alphatauri.com 1 2026-01-16 2026-01-16 nxdomain
b2b-shop.alphatauri.com 6 2026-06-24 2026-08-26 ok
*.app.alphatauri.com 1 2026-06-05 2026-06-05 —
customerservice-q.alphatauri.com 4 2025-10-15 2026-09-29 ok
b2b-login-q.alphatauri.com 2 2025-10-08 2026-08-10 ok
www.b2b-login-q.alphatauri.com 2 2025-10-08 2026-08-10 nxdomain
b2b-shop-q.alphatauri.com 10 2026-06-24 2026-08-26 ok
images.alphatauri.com 2 2026-03-05 2026-08-31 ok
account.qs.alphatauri.com 2 2025-09-14 2026-06-11 ok
assets.alphatauri.com 6 2025-09-15 2026-09-05 ok
dt.alphatauri.com 1 2026-06-02 2026-06-02 nodata
account.dt.alphatauri.com 2 2025-09-14 2026-06-11 ok
smartedit.alphatauri.com 1 2026-09-04 2026-09-04 ok
www.smartedit.alphatauri.com 1 2026-09-04 2026-09-04 nxdomain
customknitmeasurement.alphatauri.com 3 2025-11-21 2026-09-23 ok
stage-customknitmeasurement.alphatauri.com 2 2025-10-12 2026-08-14 ok
www.stage-customknitmeasurement.alphatauri.com 2 2025-10-12 2026-08-14 nxdomain
www.customknitmeasurement.alphatauri.com 3 2025-11-21 2026-09-23 nxdomain
account.alphatauri.com 1 2025-12-17 2025-12-17 ok
dev.alphatauri.com 3 2026-05-13 2026-09-29 ok
smartedit-dev.alphatauri.com 1 2026-09-04 2026-09-04 ok
www.smartedit-dev.alphatauri.com 1 2026-09-04 2026-09-04 nxdomain
www.dev.alphatauri.com 3 2026-05-13 2026-09-29 nxdomain
www.alphatauri.com 3 2025-10-02 2026-07-02 ok

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