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.

37 hosts · 314 ms

HostCertsFirst seenLast seenDNS
buildyourstore.ai 36 2026-04-16 2026-10-01 ok
*.buildyourstore.ai 28 2025-12-03 2026-10-01 —
test1.buildyourstore.ai 5 2026-05-16 2026-07-14 nxdomain
test2.buildyourstore.ai 8 2026-05-16 2026-07-14 nxdomain
app-fr-ad-5293.buildyourstore.ai 2 2026-09-16 2026-09-16 ok
test3.buildyourstore.ai 6 2026-05-16 2026-07-14 nxdomain
test4.buildyourstore.ai 6 2026-05-16 2026-07-14 nxdomain
mb.buildyourstore.ai 20 2026-04-22 2026-08-18 ok
stage.buildyourstore.ai 12 2026-06-05 2026-10-01 ok
app-stage.buildyourstore.ai 13 2026-06-06 2026-10-02 ok
api-staging.buildyourstore.ai 10 2026-05-10 2026-09-05 ok
platform-staging.buildyourstore.ai 12 2026-04-28 2026-08-24 ok
stores-admin-staging.buildyourstore.ai 3 2026-09-16 2026-09-16 ok
go-staging.buildyourstore.ai 6 2026-07-08 2026-09-05 ok
stores-staging.buildyourstore.ai 8 2026-05-27 2026-09-22 ok
manage-stores-staging.buildyourstore.ai 3 2026-09-14 2026-09-14 ok
mixpanel-proxy-staging.buildyourstore.ai 12 2026-05-15 2026-09-10 ok
api.buildyourstore.ai 10 2026-04-28 2026-08-25 ok
platform.buildyourstore.ai 8 2026-04-27 2026-08-23 ok
sgtm.buildyourstore.ai 5 2026-05-02 2026-08-29 ok
stores-admin.buildyourstore.ai 3 2026-09-16 2026-09-16 ok
clicks.info.buildyourstore.ai 11 2026-06-06 2026-10-02 ok
go.buildyourstore.ai 6 2026-07-08 2026-09-05 ok
clicks.hello.buildyourstore.ai 12 2026-06-06 2026-10-02 ok
help.buildyourstore.ai 11 2026-05-28 2026-09-23 ok
app.buildyourstore.ai 10 2026-05-15 2026-09-11 ok
app-stage-docker.buildyourstore.ai 10 2026-06-06 2026-10-03 ok
app-docker.buildyourstore.ai 11 2026-06-06 2026-10-02 ok
stores.buildyourstore.ai 7 2026-06-03 2026-09-29 ok
masterclass.buildyourstore.ai 12 2026-04-13 2026-08-09 ok
email.masterclass.buildyourstore.ai 5 2026-04-24 2026-08-21 ok
start.buildyourstore.ai 1 2026-09-22 2026-09-22 ok
www.buildyourstore.ai 10 2026-04-17 2026-08-14 ok
shopify.buildyourstore.ai 9 2026-08-04 2026-10-02 ok
staging-shopify.buildyourstore.ai 7 2026-08-04 2026-10-02 ok
app-copy.buildyourstore.ai 10 2026-05-15 2026-09-10 ok
mixpanel-proxy.buildyourstore.ai 10 2026-05-15 2026-09-10 ok

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