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.

18 hosts · 255 ms

HostCertsFirst seenLast seenDNS
walley.se 1 2026-04-29 2026-04-29 ok
url7378.walley.se 2 2026-07-06 2026-07-06 ok
b2b.walley.se 5 2026-05-10 2026-09-06 ok
www.b2b.walley.se 7 2026-04-28 2026-08-28 ok
auth.preprod.walley.se 5 2026-05-26 2026-09-23 ok
blogg.walley.se 9 2026-05-31 2026-09-26 ok
auth.walley.se 5 2026-05-26 2026-09-23 ok
url4116.m.walley.se 1 2026-07-07 2026-07-07 ok
login.walley.se 1 2026-05-04 2026-05-04 ok
kontoadmin.walley.se 34 2026-06-30 2026-09-28 ok
internal.kontoadmin.walley.se 6 2026-06-30 2026-08-29 ok
info.walley.se 9 2026-06-01 2026-09-27 ok
www-test.webapp.walley.se 5 2026-05-30 2026-09-27 ok
www.webapp.walley.se 5 2026-05-30 2026-09-27 ok
signicat.walley.se 5 2026-04-28 2026-08-26 ok
www.walley.se 1 2026-04-29 2026-04-29 ok
my.walley.se 95 2026-02-05 2026-09-30 ok
internal.my.walley.se 8 2026-06-05 2026-10-03 ok

Programmatic access, with DNS A records: API GET /v1/hosts/walley.se (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/walley.se.