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.

15 hosts · 224 ms

HostCertsFirst seenLast seen
lights.co.uk 5 2026-05-30 2026-09-27
service.lights.co.uk 5 2026-05-09 2026-09-06
xtg.lights.co.uk 10 2026-05-19 2026-09-14
rcgwej.lights.co.uk 3 2026-04-29 2026-09-09
professional.lights.co.uk 8 2026-04-19 2026-08-15
go.lights.co.uk 5 2026-04-19 2026-06-18
pro.lights.co.uk 5 2026-05-04 2026-09-01
collector.sst.pro.lights.co.uk 4 2026-04-13 2026-08-11
www.pro.lights.co.uk 5 2026-05-04 2026-09-01
link.reply.pro.lights.co.uk 5 2026-05-08 2026-09-05
link.shop.lights.co.uk 4 2026-04-15 2026-08-13
news.lights.co.uk 4 2026-04-18 2026-08-16
support.lights.co.uk 10 2026-04-22 2026-08-18
collector.sst.lights.co.uk 4 2026-04-13 2026-08-11
www.lights.co.uk 5 2026-05-30 2026-09-27

Programmatic access: API GET /v1/hosts/lights.co.uk (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/lights.co.uk.