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.

56 hosts · 226 ms

HostCertsFirst seenLast seen
hqrprodax02.rackroom.com 5 2025-07-28 2026-09-01
www.hqrprodax02.rackroom.com 5 2025-07-28 2026-09-01
hqrprodax04.rackroom.com 4 2025-07-28 2026-09-01
www.hqrprodax04.rackroom.com 4 2025-07-28 2026-09-01
Pytho4.rackroom.com 1 2026-07-27 2026-07-27
s2hweb.rackroom.com 1 2026-04-15 2026-04-15
s2devweb.rackroom.com 1 2026-04-15 2026-04-15
s2hdevweb.rackroom.com 1 2026-04-15 2026-04-15
lynxdevweb.rackroom.com 2 2026-03-02 2026-09-11
lynxweb.rackroom.com 3 2026-03-02 2026-09-14
apexprint-mdse-prod.rackroom.com 1 2026-01-29 2026-01-29
apex-mdse-prod.rackroom.com 2 2026-01-29 2026-02-18
ebs-prod.rackroom.com 1 2025-10-16 2025-10-16
apex-ebs-prod.rackroom.com 1 2026-01-29 2026-01-29
www.apex-ebs-prod.rackroom.com 1 2026-01-29 2026-01-29
selfservice.rackroom.com 1 2025-10-29 2025-10-29
maintenance.rackroom.com 2 2026-04-14 2026-05-18
ebs-patch.rackroom.com 1 2025-10-16 2025-10-16
selfservicepatch.rackroom.com 1 2025-10-29 2025-10-29
s2hapi.rackroom.com 1 2025-11-05 2025-11-05
www.s2hapi.rackroom.com 1 2025-11-05 2025-11-05
s2hdevapi.rackroom.com 2 2025-11-05 2026-09-11
www.s2hdevapi.rackroom.com 2 2025-11-05 2026-09-11
lynxdevapi.rackroom.com 2 2026-03-02 2026-09-11
lynxapi.rackroom.com 3 2026-03-02 2026-09-14
local.rackroom.com 3 2025-08-14 2026-09-14
*.local.rackroom.com 3 2025-08-14 2026-09-14
rrpos61.local.rackroom.com 1 2025-10-02 2025-10-02
rrpos62.local.rackroom.com 1 2025-10-02 2025-10-02
rrpos66.local.rackroom.com 4 2025-07-31 2026-08-01
rrpos67.local.rackroom.com 9 2025-07-31 2026-09-24
lynxdevecom.rackroom.com 2 2025-07-14 2026-07-20
www.lynxdevecom.rackroom.com 1 2025-07-14 2025-07-14
lynxecom.rackroom.com 3 2025-07-28 2026-08-18
www.lynxecom.rackroom.com 3 2025-07-28 2026-08-18
rrscorp.rackroom.com 1 2026-01-16 2026-01-16
edge.rrscorp.rackroom.com 1 2026-01-16 2026-01-16
tp.rrscorp.rackroom.com 1 2025-10-08 2025-10-08
www.tp.rrscorp.rackroom.com 1 2025-10-08 2025-10-08
isp.rackroom.com 3 2025-10-08 2025-10-13
www.isp.rackroom.com 3 2025-10-08 2025-10-13
lynxdevwebstores.rackroom.com 3 2026-03-02 2026-09-11
lynxwebstores.rackroom.com 3 2026-03-02 2026-09-15
lynxdevapistores.rackroom.com 3 2026-01-14 2026-02-04
www.lynxdevapistores.rackroom.com 3 2026-01-14 2026-02-04
lynxapistores.rackroom.com 6 2026-03-02 2026-09-15
manuals.rackroom.com 1 2026-04-14 2026-04-14
ebs-test.rackroom.com 1 2025-10-16 2025-10-16
apex-ebs-test.rackroom.com 5 2026-04-14 2026-10-02
selfservicetest.rackroom.com 1 2025-10-29 2025-10-29
apexprint-mdse-dev.rackroom.com 1 2026-01-20 2026-01-20
apex-mdse-dev.rackroom.com 3 2026-01-20 2026-02-18
apex-ebs-dev.rackroom.com 7 2026-01-20 2026-08-20
loyaltydev.rackroom.com 2 2026-04-15 2026-04-16
apigateway.rackroom.com 1 2026-04-14 2026-04-14
loyalty.rackroom.com 2 2026-04-15 2026-04-16

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