Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

21 hosts · 239 ms

HostCertsFirst seenLast seen
lancaster.com 17 2026-05-26 2026-10-06
b2b.lancaster.com 18 2026-04-12 2026-10-07
plmc.lancaster.com 5 2026-04-24 2026-08-22
de.lancaster.com 5 2026-04-24 2026-09-14
www.de.lancaster.com 5 2026-04-24 2026-09-14
sg.lancaster.com 5 2026-04-24 2026-09-14
hk.lancaster.com 13 2026-05-26 2026-10-06
uk.lancaster.com 5 2026-04-24 2026-09-14
portal.lancaster.com 5 2026-04-26 2026-08-24
showroom.lancaster.com 17 2026-04-12 2026-10-07
www.showroom.lancaster.com 20 2026-04-12 2026-10-06
en.lancaster.com 5 2026-04-24 2026-09-14
seconde-main.lancaster.com 5 2026-04-12 2026-06-11
kevin.lancaster.com 5 2026-04-24 2026-08-22
fr.lancaster.com 5 2026-04-24 2026-09-14
qr.lancaster.com 5 2026-05-02 2026-09-28
us.lancaster.com 5 2026-04-23 2026-09-14
it.lancaster.com 5 2026-04-24 2026-09-14
account.lancaster.com 15 2026-04-28 2026-09-05
pdv.lancaster.com 5 2026-04-24 2026-08-22
www.lancaster.com 15 2026-05-27 2026-10-06

Programmatic access: API GET /v1/hosts/lancaster.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/lancaster.com.