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.

20 hosts · 392 ms

HostCertsFirst seenLast seenDNS
jowissa.com 21 2026-05-15 2026-09-25 ok
*.jowissa.com 6 2026-05-15 2026-09-10 —
b2b.jowissa.com 16 2026-05-18 2026-09-25 ok
de.jowissa.com 14 2026-05-16 2026-09-27 ok
testing.jowissa.com 4 2026-05-08 2026-07-06 ok
ch.jowissa.com 13 2026-05-17 2026-09-25 ok
bimi.jowissa.com 2 2026-07-29 2026-07-29 nxdomain
img.mail.jowissa.com 6 2026-05-06 2026-07-05 ok
r.mail.jowissa.com 3 2026-04-14 2026-07-03 ok
in.jowissa.com 5 2026-05-25 2026-09-22 ok
pin.jowissa.com 4 2026-05-21 2026-07-20 ok
info.jowissa.com 8 2026-04-24 2026-08-20 ok
ko.jowissa.com 15 2026-05-17 2026-09-25 ok
fr.jowissa.com 13 2026-05-17 2026-09-26 ok
es.jowissa.com 12 2026-05-18 2026-09-26 ok
sms.jowissa.com 10 2026-05-10 2026-09-06 ok
us.jowissa.com 16 2026-05-16 2026-09-28 ok
it.jowissa.com 15 2026-05-17 2026-09-25 ok
account.jowissa.com 17 2026-04-10 2026-09-23 ok
www.jowissa.com 13 2026-05-16 2026-09-28 ok

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