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) · 279 ms

HostCertsFirst seenLast seen
leedsbuildingsociety.co.uk 2 2026-02-09 2026-05-21
voltage-pp-0000.leedsbuildingsociety.co.uk 3 2025-08-20 2026-08-17
www.voltage-pp-0000.leedsbuildingsociety.co.uk 3 2025-08-20 2026-08-17
voltage-ps-0000.leedsbuildingsociety.co.uk 3 2025-08-20 2026-08-17
www.voltage-ps-0000.leedsbuildingsociety.co.uk 3 2025-08-20 2026-08-17
gp1.leedsbuildingsociety.co.uk 1 2026-04-14 2026-04-14
www.gp1.leedsbuildingsociety.co.uk 1 2026-04-14 2026-04-14
gp2.leedsbuildingsociety.co.uk 1 2026-04-14 2026-04-14
www.gp2.leedsbuildingsociety.co.uk 1 2026-04-14 2026-04-14
*.mortgagehub.leedsbuildingsociety.co.uk 5 2025-06-12 2026-08-14
online.leedsbuildingsociety.co.uk 2 2026-02-09 2026-05-21
*.mso-pre.leedsbuildingsociety.co.uk 3 2026-04-28 2026-08-11
mail.mso-pre.leedsbuildingsociety.co.uk 3 2026-04-30 2026-09-30
digitalmortgages-pre.leedsbuildingsociety.co.uk 2 2026-05-03 2026-10-03
guestwifi.leedsbuildingsociety.co.uk 3 2025-10-13 2026-10-05
www.guestwifi.leedsbuildingsociety.co.uk 3 2025-10-13 2026-10-05
api.leedsbuildingsociety.co.uk 2 2025-08-20 2026-04-07
uat1-api.leedsbuildingsociety.co.uk 1 2026-01-26 2026-01-26
uat2-api.leedsbuildingsociety.co.uk 1 2026-01-26 2026-01-26
ps-api.leedsbuildingsociety.co.uk 1 2026-01-26 2026-01-26
sit-api.leedsbuildingsociety.co.uk 1 2026-01-26 2026-01-26
dev-api.leedsbuildingsociety.co.uk 1 2026-01-26 2026-01-26
pre.api.leedsbuildingsociety.co.uk 1 2025-08-19 2025-08-19
mig.api.leedsbuildingsociety.co.uk 1 2025-08-19 2025-08-19
uat.api.leedsbuildingsociety.co.uk 1 2025-08-19 2025-08-19
sit.api.leedsbuildingsociety.co.uk 1 2025-08-19 2025-08-19
int.api.leedsbuildingsociety.co.uk 1 2025-08-19 2025-08-19
tst.api.leedsbuildingsociety.co.uk 1 2025-08-19 2025-08-19
dev.api.leedsbuildingsociety.co.uk 1 2025-08-13 2025-08-13
www.api.leedsbuildingsociety.co.uk 1 2026-04-07 2026-04-07
azure.internal.leedsbuildingsociety.co.uk 1 2026-05-12 2026-05-12
api-oat.core.azure.internal.leedsbuildingsociety.co.uk 4 2026-07-08 2026-07-08
api-uks-oat.core.azure.internal.leedsbuildingsociety.co.uk 2 2026-07-08 2026-07-08
api-ukw-oat.core.azure.internal.leedsbuildingsociety.co.uk 2 2026-07-08 2026-07-08
api.azure.internal.leedsbuildingsociety.co.uk 1 2026-05-12 2026-05-12
*.api.azure.internal.leedsbuildingsociety.co.uk 1 2026-05-12 2026-05-12
apps.azure.internal.leedsbuildingsociety.co.uk 1 2026-05-12 2026-05-12
*.apps.azure.internal.leedsbuildingsociety.co.uk 1 2026-05-12 2026-05-12
exchangemail.leedsbuildingsociety.co.uk 1 2026-01-12 2026-01-12
btl.leedsbuildingsociety.co.uk 3 2026-05-05 2026-09-07
backend-btl.leedsbuildingsociety.co.uk 2 2026-04-09 2026-08-01
pre-backend-btl.leedsbuildingsociety.co.uk 2 2026-04-27 2026-08-19
uat-backend-btl.leedsbuildingsociety.co.uk 2 2026-04-27 2026-08-19
sit-backend-btl.leedsbuildingsociety.co.uk 2 2026-04-27 2026-08-19
pre-btl.leedsbuildingsociety.co.uk 3 2026-05-08 2026-09-20
uat-btl.leedsbuildingsociety.co.uk 3 2026-05-12 2026-09-23
sit-btl.leedsbuildingsociety.co.uk 2 2026-05-26 2026-10-07
azure.platform.leedsbuildingsociety.co.uk 1 2026-06-02 2026-06-02
azlbsplatformeapim001.azure.platform.leedsbuildingsociety.co.uk 5 2026-04-23 2026-10-07
azlbsplatformiapim001.azure.platform.leedsbuildingsociety.co.uk 5 2026-04-27 2026-10-08
azlbsplatformmapim001.azure.platform.leedsbuildingsociety.co.uk 8 2026-05-01 2026-07-16
azlbsplatformoapim001.azure.platform.leedsbuildingsociety.co.uk 4 2026-07-08 2026-10-02
azlbsplatformpapim001.azure.platform.leedsbuildingsociety.co.uk 4 2026-04-30 2026-07-23
azlbsplatformrapim001.azure.platform.leedsbuildingsociety.co.uk 4 2026-04-27 2026-07-16
azlbsplatformtapim001.azure.platform.leedsbuildingsociety.co.uk 5 2026-04-27 2026-10-08
api.azure.platform.leedsbuildingsociety.co.uk 2 2025-07-25 2026-06-17
*.prod.api.azure.platform.leedsbuildingsociety.co.uk 1 2026-06-17 2026-06-17
pre.api.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
mig.api.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
uat.api.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
sit.api.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
int.api.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
tst.api.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
dev.api.azure.platform.leedsbuildingsociety.co.uk 2 2025-07-25 2026-06-02
*.dev.api.azure.platform.leedsbuildingsociety.co.uk 1 2026-06-02 2026-06-02
azlbsplatformeapim001-uks.azure.platform.leedsbuildingsociety.co.uk 5 2026-04-23 2026-10-07
azlbsplatformiapim001-uks.azure.platform.leedsbuildingsociety.co.uk 5 2026-04-27 2026-10-08
azlbsplatformmapim001-uks.azure.platform.leedsbuildingsociety.co.uk 8 2026-05-01 2026-07-16
azlbsplatformoapim001-uks.azure.platform.leedsbuildingsociety.co.uk 4 2026-07-08 2026-10-02
azlbsplatformpapim001-uks.azure.platform.leedsbuildingsociety.co.uk 4 2026-04-30 2026-07-23
azlbsplatformrapim001-uks.azure.platform.leedsbuildingsociety.co.uk 4 2026-04-27 2026-07-16
azlbsplatformtapim001-uks.azure.platform.leedsbuildingsociety.co.uk 5 2026-04-27 2026-10-08
apps.azure.platform.leedsbuildingsociety.co.uk 2 2025-07-25 2026-06-17
*.prod.apps.azure.platform.leedsbuildingsociety.co.uk 1 2026-06-17 2026-06-17
pre.apps.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
mig.apps.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
uat.apps.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
sit.apps.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
int.apps.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
tst.apps.azure.platform.leedsbuildingsociety.co.uk 1 2025-07-25 2025-07-25
dev.apps.azure.platform.leedsbuildingsociety.co.uk 2 2025-07-25 2026-06-02
*.dev.apps.azure.platform.leedsbuildingsociety.co.uk 1 2026-06-02 2026-06-02
access.azure.platform.leedsbuildingsociety.co.uk 1 2026-07-28 2026-07-28
pre.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
uks.pre.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
ukw.pre.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
mig.access.azure.platform.leedsbuildingsociety.co.uk 1 2026-07-28 2026-07-28
uks.mig.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
ukw.mig.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
uks.access.azure.platform.leedsbuildingsociety.co.uk 1 2026-07-28 2026-07-28
uat.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
uks.uat.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
ukw.uat.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
sit.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
uks.sit.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
ukw.sit.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
int.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
uks.int.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
ukw.int.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28
tst.access.azure.platform.leedsbuildingsociety.co.uk 2 2026-07-28 2026-07-28

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/leedsbuildingsociety.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/leedsbuildingsociety.co.uk.