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.

34 hosts · 231 ms

HostCertsFirst seenLast seen
communa.app 5 2026-06-07 2026-10-05
bounce-zem-1.communa.app 10 2026-05-28 2026-09-25
iasg2026.communa.app 4 2026-04-12 2026-08-10
web.communa.app 2 2025-08-18 2026-07-19
dev-web.communa.app 5 2026-04-13 2026-08-11
use1.dev-web.communa.app 2 2026-09-08 2026-09-09
tracking.bc.communa.app 1 2026-07-13 2026-07-13
track.resend.communa.app 1 2026-07-01 2026-07-01
engage.communa.app 2 2025-08-18 2026-07-19
rg.communa.app 2 2026-08-05 2026-08-05
www.rg.communa.app 2 2026-08-05 2026-08-05
api.communa.app 2 2025-08-18 2026-07-19
demo-api.communa.app 4 2026-04-19 2026-08-18
dev-api.communa.app 6 2026-04-13 2026-09-04
use1.dev-api.communa.app 2 2026-09-08 2026-09-09
cdn.communa.app 3 2025-11-08 2025-11-11
surendar.communa.app 1 2026-09-07 2026-09-07
*.empower.communa.app 2 2025-08-18 2026-07-19
api.empower.communa.app 2 2025-08-18 2026-07-19
*.dev.empower.communa.app 3 2026-05-04 2026-08-03
use1.dev.empower.communa.app 2 2026-09-08 2026-09-09
*.use1.dev.empower.communa.app 1 2026-09-09 2026-09-09
api.dev.empower.communa.app 5 2026-04-13 2026-08-11
certificates.communa.app 2 2025-08-21 2026-07-22
socket.communa.app 5 2026-05-09 2026-09-07
iu.communa.app 2 2026-08-18 2026-08-18
engage-dev.communa.app 5 2026-04-13 2026-08-11
use1.engage-dev.communa.app 2 2026-09-08 2026-09-09
api-dev.communa.app 4 2026-05-04 2026-05-04
speaker-api-dev.communa.app 4 2026-05-04 2026-05-04
paymentsapi-dev.communa.app 4 2026-05-04 2026-05-04
cdn-dev.communa.app 1 2026-06-22 2026-06-22
app-dev.communa.app 4 2026-05-04 2026-05-04
www.communa.app 5 2026-06-07 2026-10-05

Programmatic access: API GET /v1/hosts/communa.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/communa.app.