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.

23 hosts · 372 ms

HostCertsFirst seenLast seenDNS
sheko.com 45 2026-04-14 2026-09-27 ok
*.sheko.com 16 2026-04-21 2026-09-27 —
3430209201.sheko.com 9 2026-05-22 2026-09-17 ok
nx2.sheko.com 10 2026-04-24 2026-09-23 ok
data.sheko.com 8 2026-05-15 2026-09-12 ok
download.sheko.com 5 2026-05-18 2026-09-15 ok
api.sheko.com 5 2026-05-19 2026-09-17 ok
devapi.sheko.com 6 2026-05-19 2026-09-17 ok
signal.sheko.com 2 2026-09-10 2026-09-10 ok
*.signal.sheko.com 2 2026-09-10 2026-09-10 —
n8n.sheko.com 5 2026-04-29 2026-08-26 ok
abnehmen.sheko.com 1 2026-02-10 2026-02-10 ok
help.sheko.com 7 2026-05-13 2026-08-20 ok
whatsapp.sheko.com 6 2026-05-13 2026-09-08 ok
qr.sheko.com 2 2026-09-03 2026-09-03 ok
*.qr.sheko.com 2 2026-09-03 2026-09-03 —
tr.sheko.com 5 2026-04-30 2026-08-29 ok
ias.sheko.com 16 2026-05-13 2026-09-10 ok
sms.sheko.com 10 2026-05-09 2026-09-04 ok
hnsu239dow.sheko.com 3 2026-05-21 2026-09-06 ok
v6.hnsu239dow.sheko.com 3 2026-05-21 2026-09-06 nodata
www.sheko.com 13 2026-04-14 2026-09-26 ok
tx.sheko.com 4 2026-04-14 2026-08-13 ok

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