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.

100 hosts (first page) · 286 ms

HostCertsFirst seenLast seen
staysure.co.uk 89 2025-08-14 2026-10-09
*.staysure.co.uk 91 2025-06-23 2026-10-06
vpn41.staysure.co.uk 15 2026-05-26 2026-08-19
www.vpn41.staysure.co.uk 15 2026-05-26 2026-08-19
vpn222.staysure.co.uk 1 2025-11-05 2025-11-05
www.vpn222.staysure.co.uk 1 2025-11-05 2025-11-05
vpn243.staysure.co.uk 1 2025-11-18 2025-11-18
www.vpn243.staysure.co.uk 1 2025-11-18 2025-11-18
vpn34.staysure.co.uk 1 2025-11-18 2025-11-18
www.vpn34.staysure.co.uk 1 2025-11-18 2025-11-18
vpn54.staysure.co.uk 11 2026-05-07 2026-08-24
www.vpn54.staysure.co.uk 11 2026-05-07 2026-08-24
vpn38.staysure.co.uk 1 2025-11-18 2025-11-18
www.vpn38.staysure.co.uk 1 2025-11-18 2025-11-18
vpn59.staysure.co.uk 1 2025-11-18 2025-11-18
www.vpn59.staysure.co.uk 1 2025-11-18 2025-11-18
cms-public.staysure.co.uk 5 2026-04-24 2026-08-22
nc.staysure.co.uk 4 2025-08-11 2026-08-12
www.nc.staysure.co.uk 4 2025-08-11 2026-08-12
hybrid.staysure.co.uk 1 2026-05-30 2026-05-30
autodiscover.hybrid.staysure.co.uk 1 2026-05-30 2026-05-30
complaintservice.staysure.co.uk 1 2025-10-28 2025-10-28
travelinsurance.staysure.co.uk 8 2026-04-25 2026-08-21
brochure.staysure.co.uk 14 2026-04-23 2026-10-09
qa.staysure-brochure.staysure.co.uk 8 2026-04-28 2026-08-24
*.brochure.staysure.co.uk 2 2026-10-09 2026-10-09
public.brochure.staysure.co.uk 10 2026-04-23 2026-10-09
*.public.brochure.staysure.co.uk 2 2026-10-09 2026-10-09
author-intl.brochure.staysure.co.uk 6 2026-10-09 2026-10-09
*.author-intl.brochure.staysure.co.uk 6 2026-10-09 2026-10-09
author.brochure.staysure.co.uk 10 2026-04-23 2026-10-09
*.author.brochure.staysure.co.uk 2 2026-10-09 2026-10-09
measure.staysure.co.uk 3 2026-06-02 2026-09-16
medical-screening.staysure.co.uk 10 2026-05-12 2026-09-07
*.marketing.staysure.co.uk 11 2025-09-05 2026-08-25
prtg.staysure.co.uk 1 2026-04-28 2026-04-28
www.prtg.staysure.co.uk 1 2026-04-28 2026-04-28
medical-service-sae-auth.staysure.co.uk 2 2025-06-17 2025-06-25
medical-service-irl-auth.staysure.co.uk 1 2025-09-29 2025-09-29
api.staysure.co.uk 8 2026-05-12 2026-09-07
*.api.staysure.co.uk 11 2026-05-12 2026-09-07
voicebff.api.staysure.co.uk 10 2026-04-18 2026-08-14
auth.api.staysure.co.uk 3 2026-06-20 2026-06-20
medical-screening-rock.staysure.co.uk 8 2026-05-12 2026-09-07
author-intl.brochure.staysure.co.uk.staysure.co.uk 2 2026-10-09 2026-10-09
*.author-intl.brochure.staysure.co.uk.staysure.co.uk 2 2026-10-09 2026-10-09
medical-service-sae-internal.staysure.co.uk 1 2025-06-25 2025-06-25
medical-service-irl-internal.staysure.co.uk 2 2025-09-29 2026-10-06
medical-service-ptm-internal.staysure.co.uk 2 2025-09-26 2026-10-06
webmail.staysure.co.uk 37 2025-07-23 2026-10-07
www.webmail.staysure.co.uk 6 2025-08-10 2026-08-10
northampton.staysure.co.uk 4 2025-11-03 2026-04-25
*.northampton.staysure.co.uk 3 2025-11-03 2026-04-25
cas01.northampton.staysure.co.uk 4 2025-08-10 2026-08-10
www.cas01.northampton.staysure.co.uk 4 2025-08-10 2026-08-10
stayex01.northampton.staysure.co.uk 2 2025-11-18 2026-03-04
www.stayex01.northampton.staysure.co.uk 2 2025-11-18 2026-03-04
cas02.northampton.staysure.co.uk 2 2026-04-23 2026-10-07
www.cas02.northampton.staysure.co.uk 2 2026-04-23 2026-10-07
stayex02.northampton.staysure.co.uk 4 2025-08-10 2026-08-10
www.stayex02.northampton.staysure.co.uk 4 2025-08-10 2026-08-10
mobile2.northampton.staysure.co.uk 8 2025-08-10 2026-08-11
www.mobile2.northampton.staysure.co.uk 4 2025-08-11 2026-08-11
stayex04.northampton.staysure.co.uk 4 2025-08-10 2026-08-10
www.stayex04.northampton.staysure.co.uk 4 2025-08-10 2026-08-10
mobile4.northampton.staysure.co.uk 1 2026-01-13 2026-01-13
www.mobile4.northampton.staysure.co.uk 1 2026-01-13 2026-01-13
stayex05.northampton.staysure.co.uk 1 2025-10-22 2025-10-22
www.stayex05.northampton.staysure.co.uk 1 2025-10-22 2025-10-22
mobile5.northampton.staysure.co.uk 1 2026-01-27 2026-01-27
www.mobile5.northampton.staysure.co.uk 1 2026-01-27 2026-01-27
ex2016.northampton.staysure.co.uk 1 2026-05-30 2026-05-30
www.ex2016.northampton.staysure.co.uk 1 2026-05-30 2026-05-30
mobile6.northampton.staysure.co.uk 3 2025-07-23 2026-07-22
www.mobile6.northampton.staysure.co.uk 3 2025-07-23 2026-07-22
stayex07.northampton.staysure.co.uk 1 2026-05-27 2026-05-27
www.stayex07.northampton.staysure.co.uk 1 2026-05-27 2026-05-27
stayex08.northampton.staysure.co.uk 3 2025-09-07 2026-09-08
www.stayex08.northampton.staysure.co.uk 3 2025-09-07 2026-09-08
mobile.northampton.staysure.co.uk 2 2026-04-22 2026-10-06
www.mobile.northampton.staysure.co.uk 2 2026-04-22 2026-10-06
prtg.northampton.staysure.co.uk 1 2026-04-28 2026-04-28
autodiscover.northampton.staysure.co.uk 14 2025-07-23 2026-08-10
intranet.northampton.staysure.co.uk 1 2026-05-26 2026-05-26
www.intranet.northampton.staysure.co.uk 1 2026-05-26 2026-05-26
autodiscover.staysure.co.uk 36 2025-07-23 2026-10-07
cms-author.staysure.co.uk 5 2026-04-26 2026-08-24
uat02sts.staysure.co.uk 1 2026-06-09 2026-06-09
*.uat.staysure.co.uk 11 2026-05-25 2026-09-20
medical-bff.uat.staysure.co.uk 22 2026-06-08 2026-10-04
medical-screening.uat.staysure.co.uk 11 2026-06-08 2026-10-04
renewalbff-avn.uat.staysure.co.uk 1 2025-08-04 2025-08-04
cloud.exact.staysure.co.uk 2 2025-07-06 2026-06-23
image.exact.staysure.co.uk 3 2026-01-21 2026-09-01
click.exact.staysure.co.uk 2 2025-07-04 2026-06-22
view.exact.staysure.co.uk 2 2025-07-01 2026-06-18
cms-content.staysure.co.uk 1 2026-08-19 2026-08-19
sectest.staysure.co.uk 17 2026-04-27 2026-08-23
*.sectest.staysure.co.uk 34 2025-09-07 2026-08-23
www.staysure.co.uk 2 2025-09-06 2026-10-06

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/staysure.co.uk.

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/staysure.co.uk.