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.

20 hosts · 237 ms

Download CSV
HostCertsFirst seenLast seen
scarletknights.com 21 2025-11-17 2026-10-13
*.scarletknights.com 17 2026-01-20 2026-10-13
static.scarletknights.com 5 2026-05-31 2026-09-28
rfund.scarletknights.com 9 2026-05-15 2026-10-12
img.scarletknights.com 5 2026-06-19 2026-08-28
giving.scarletknights.com 5 2025-08-06 2026-07-12
clk.scarletknights.com 3 2026-06-19 2026-08-28
network.scarletknights.com 1 2025-09-30 2025-09-30
helpdesk.scarletknights.com 10 2026-04-25 2026-08-21
custom.scarletknights.com 11 2026-05-29 2026-09-25
cdn.scarletknights.com 4 2026-04-12 2026-08-23
admin.scarletknights.com 19 2026-05-09 2026-10-12
fsadmin.scarletknights.com 7 2026-05-30 2026-09-25
shop.scarletknights.com 4 2026-04-20 2026-09-22
svc.shop.scarletknights.com 4 2026-04-20 2026-09-22
content.shop.scarletknights.com 4 2026-04-20 2026-09-22
varsityrshop.scarletknights.com 11 2026-05-24 2026-10-01
app.scarletknights.com 3 2026-06-19 2026-08-28
t.scarletknights.com 3 2026-06-19 2026-08-28
www.scarletknights.com 3 2025-11-17 2025-11-19

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