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.

36 hosts · 296 ms

HostCertsFirst seenLast seen
wave-utilities.co.uk 37 2025-12-05 2026-09-25
*.wave-utilities.co.uk 25 2025-12-05 2026-09-25
url4743.wave-utilities.co.uk 10 2026-04-27 2026-08-23
SWIMAPI.wave-utilities.co.uk 2 2025-07-04 2026-06-25
SWIMUI.wave-utilities.co.uk 2 2025-07-04 2026-06-25
SWIMPOOL.wave-utilities.co.uk 2 2025-07-04 2026-06-25
SWIMAPI-TEST.wave-utilities.co.uk 2 2025-07-04 2026-06-25
SWIMUI-TEST.wave-utilities.co.uk 2 2025-07-04 2026-06-25
SWIMPOOL-TEST.wave-utilities.co.uk 2 2025-07-04 2026-06-25
qa.wave-utilities.co.uk 10 2026-05-07 2026-09-02
sic.wave-utilities.co.uk 17 2026-05-01 2026-08-27
dd-calc.wave-utilities.co.uk 16 2026-05-11 2026-09-06
word.wave-utilities.co.uk 4 2026-04-23 2026-04-23
stage.wave-utilities.co.uk 12 2026-06-04 2026-10-01
wsqe.wave-utilities.co.uk 14 2026-05-01 2026-08-27
response.wave-utilities.co.uk 10 2026-05-20 2026-09-17
migrate.wave-utilities.co.uk 14 2026-09-15 2026-09-15
webapi-stg.wave-utilities.co.uk 16 2026-06-04 2026-10-01
cop-stg.wave-utilities.co.uk 6 2026-08-17 2026-08-18
silver-plinth.wave-utilities.co.uk 18 2026-04-23 2026-08-19
auth.wave-utilities.co.uk 10 2026-04-25 2026-08-21
webapi.wave-utilities.co.uk 15 2026-06-04 2026-10-01
customblock.wave-utilities.co.uk 2 2026-09-22 2026-09-22
25p.wave-utilities.co.uk 18 2026-05-04 2026-08-30
cop.wave-utilities.co.uk 8 2026-08-10 2026-10-08
cedar.wave-utilities.co.uk 4 2026-04-23 2026-04-23
colour.wave-utilities.co.uk 5 2026-08-12 2026-08-12
marketingpreferences.wave-utilities.co.uk 15 2026-06-05 2026-10-01
myperks.wave-utilities.co.uk 5 2026-08-25 2026-08-25
forms.wave-utilities.co.uk 69 2026-04-17 2026-10-07
myaccount.wave-utilities.co.uk 29 2026-04-13 2026-10-08
test.wave-utilities.co.uk 1 2026-04-27 2026-04-27
www.test.wave-utilities.co.uk 1 2026-04-27 2026-04-27
dev.wave-utilities.co.uk 13 2026-06-04 2026-10-01
jigsaw.wave-utilities.co.uk 23 2026-06-06 2026-10-04
www.wave-utilities.co.uk 12 2026-04-27 2026-09-24

Programmatic access: API GET /v1/hosts/wave-utilities.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/wave-utilities.co.uk.