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.

47 hosts · 412 ms

HostCertsFirst seenLast seenDNS
puzzleyou-news.com 7 2026-04-23 2026-09-01 ok
*.puzzleyou-news.com 2 2026-07-07 2026-09-01 —
ca.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.ca.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
be.puzzleyou-news.com 2 2026-03-23 2026-08-29 ok
www.be.puzzleyou-news.com 2 2026-03-23 2026-08-29 ok
de.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.de.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
ie.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.ie.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
se.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.se.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
ch.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.ch.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
fi.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.fi.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
dk.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.dk.puzzleyou-news.com 2 2026-03-16 2026-08-22 servfail
sk.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.sk.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
uk.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.uk.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
nl.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.nl.puzzleyou-news.com 3 2026-03-16 2026-08-22 servfail
pl.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.pl.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
no.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.no.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
ro.puzzleyou-news.com 1 2026-05-26 2026-05-26 ok
www.ro.puzzleyou-news.com 1 2026-05-26 2026-05-26 ok
fr.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.fr.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
es.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.es.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
us.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.us.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
at.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
www.at.puzzleyou-news.com 3 2026-03-16 2026-08-22 ok
it.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.it.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
pt.puzzleyou-news.com 1 2026-05-26 2026-05-26 ok
www.pt.puzzleyou-news.com 1 2026-05-26 2026-05-26 ok
lu.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.lu.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.puzzleyou-news.com 5 2026-04-23 2026-08-07 ok
cz.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok
www.cz.puzzleyou-news.com 2 2026-03-16 2026-08-22 ok

Programmatic access, with DNS A records: API GET /v1/hosts/puzzleyou-news.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/puzzleyou-news.com.