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.

49 hosts · 367 ms

HostCertsFirst seenLast seenDNS
emaillabs.io 23 2026-04-08 2026-08-30 ok
*.emaillabs.io 18 2026-04-08 2026-08-30 —
api-edrone2.emaillabs.io 5 2026-05-25 2026-09-22 ok
api-kruk2.emaillabs.io 5 2026-05-15 2026-09-12 ok
api-preprod-bpierzchala.emaillabs.io 5 2026-05-20 2026-09-17 ok
appcloudbackendupload.emaillabs.io 4 2026-04-09 2026-08-07 ok
appbackendupload.emaillabs.io 4 2026-04-17 2026-08-15 ok
proceed.emaillabs.io 5 2026-05-23 2026-09-20 ok
proceedbackend.emaillabs.io 5 2026-05-25 2026-09-23 ok
appcloudbackend.emaillabs.io 4 2026-04-09 2026-08-07 ok
appbackend.emaillabs.io 4 2026-04-17 2026-08-15 ok
api-preprod.emaillabs.io 5 2026-04-28 2026-08-25 ok
appcloud.emaillabs.io 4 2026-04-09 2026-08-07 ok
appbe.emaillabs.io 7 2026-05-07 2026-09-22 ok
api-edrone.emaillabs.io 5 2026-05-12 2026-09-09 ok
clickte.emaillabs.io 9 2026-05-12 2026-09-09 ok
appbackenduploadstaging.emaillabs.io 4 2026-04-11 2026-08-09 ok
appbackendstaging.emaillabs.io 4 2026-04-11 2026-08-09 ok
appstaging.emaillabs.io 4 2026-04-11 2026-08-09 ok
api.emaillabs.io 1 2026-04-13 2026-04-13 ok
www.api.emaillabs.io 1 2026-04-13 2026-04-13 nxdomain
track.emaillabs.io 9 2026-04-25 2026-08-24 ok
link.emaillabs.io 5 2026-05-13 2026-09-11 ok
api-kruk.emaillabs.io 5 2026-05-12 2026-09-09 ok
api-pro.emaillabs.io 5 2026-05-12 2026-09-09 ok
app.emaillabs.io 4 2026-04-17 2026-08-15 ok
smtp.emaillabs.io 2 2026-03-12 2026-09-25 ok
www.smtp.emaillabs.io 2 2026-03-12 2026-09-25 nodata
handler.emaillabs.io 5 2026-05-04 2026-09-02 ok
api-user.emaillabs.io 5 2026-06-01 2026-09-29 ok
docs.emaillabs.io 8 2026-05-21 2026-09-16 ok
newpanel.docs.emaillabs.io 7 2026-04-14 2026-06-13 ok
previous.docs.emaillabs.io 7 2026-07-27 2026-09-24 ok
apidocs.emaillabs.io 11 2026-05-30 2026-09-28 ok
templates.emaillabs.io 4 2026-04-09 2026-08-07 ok
appbackenduploadtest.emaillabs.io 4 2026-04-11 2026-08-09 ok
appbackendtest.emaillabs.io 4 2026-04-11 2026-08-09 ok
apptest.emaillabs.io 4 2026-04-11 2026-08-09 ok
dev.emaillabs.io 4 2026-04-12 2026-08-26 ok
appcloudbackenduploaddev.emaillabs.io 5 2026-04-28 2026-08-26 ok
appbackenduploaddev.emaillabs.io 4 2026-04-11 2026-08-09 ok
proceeddev.emaillabs.io 5 2026-05-23 2026-09-20 ok
proceedbackenddev.emaillabs.io 5 2026-05-26 2026-09-23 ok
appcloudbackenddev.emaillabs.io 5 2026-04-28 2026-08-26 ok
appbackenddev.emaillabs.io 4 2026-04-11 2026-08-09 ok
appclouddev.emaillabs.io 5 2026-04-28 2026-08-26 ok
appdev.emaillabs.io 4 2026-04-11 2026-08-09 ok
handlerdev.emaillabs.io 5 2026-05-03 2026-09-01 ok
www.emaillabs.io 5 2026-04-11 2026-08-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/emaillabs.io (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/emaillabs.io.