Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

30 hosts · 280 ms

HostCertsFirst seenLast seen
shop.app 11 2026-05-04 2026-09-08
help-shop-app-staging2.shop.app 13 2026-04-24 2026-10-04
help-shop-app-staging3.shop.app 20 2026-04-28 2026-09-09
help-shop-app-staging4.shop.app 19 2026-04-25 2026-09-30
server-v4.shop.app 10 2026-04-25 2026-08-21
help-shop-app-staging5.shop.app 21 2026-04-25 2026-09-30
a.shop.app 17 2026-04-18 2026-08-29
download.shop.app 13 2026-05-14 2026-09-10
www.download.shop.app 9 2026-05-13 2026-09-12
help-shop-app-staging.shop.app 20 2026-04-25 2026-09-30
auth.shop.app 16 2026-05-18 2026-08-18
mail.shop.app 26 2026-05-22 2026-10-06
open.shop.app 13 2025-09-18 2026-08-22
go.shop.app 14 2026-05-28 2026-09-23
tap.shop.app 11 2026-05-13 2026-09-10
www.tap.shop.app 13 2026-05-13 2026-09-22
help.shop.app 13 2026-05-06 2026-09-02
www.help.shop.app 9 2026-05-13 2026-09-16
discover.shop.app 13 2026-05-14 2026-09-10
www.discover.shop.app 14 2026-05-15 2026-09-14
server.shop.app 11 2026-04-23 2026-09-08
accounts.shop.app 13 2026-05-06 2026-09-01
meet.shop.app 13 2026-05-14 2026-09-11
www.meet.shop.app 17 2026-05-14 2026-09-15
get.shop.app 21 2026-05-14 2026-09-11
open.test.shop.app 12 2026-05-30 2026-09-25
go.test.shop.app 11 2026-05-08 2026-09-03
preview.shop.app 8 2026-05-30 2026-10-07
*.preview.shop.app 16 2026-05-30 2026-10-07
www.shop.app 12 2026-04-26 2026-09-13

Programmatic access: API GET /v1/hosts/shop.app (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/shop.app.