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.

76 hosts · 253 ms

HostCertsFirst seenLast seen
grapefruitdesk.com 1263 2026-04-15 2026-10-09
*.grapefruitdesk.com 109 2026-07-30 2026-10-09
cert2026091001.grapefruitdesk.com 1 2026-09-10 2026-09-10
www.cert2026091001.grapefruitdesk.com 1 2026-09-10 2026-09-10
cert2026091501.grapefruitdesk.com 3 2026-09-15 2026-09-15
www.cert2026091501.grapefruitdesk.com 3 2026-09-15 2026-09-15
cert2026091601.grapefruitdesk.com 2 2026-09-16 2026-09-16
www.cert2026091601.grapefruitdesk.com 2 2026-09-16 2026-09-16
cert2026090801.grapefruitdesk.com 2 2026-09-08 2026-09-08
www.cert2026090801.grapefruitdesk.com 2 2026-09-08 2026-09-08
cert2026090901.grapefruitdesk.com 1 2026-09-09 2026-09-09
www.cert2026090901.grapefruitdesk.com 1 2026-09-09 2026-09-09
cert2026092901.grapefruitdesk.com 1 2026-09-29 2026-09-29
www.cert2026092901.grapefruitdesk.com 1 2026-09-29 2026-09-29
san1.grapefruitdesk.com 3 2026-06-11 2026-08-11
cert2026091002.grapefruitdesk.com 1 2026-09-10 2026-09-10
www.cert2026091002.grapefruitdesk.com 1 2026-09-10 2026-09-10
cert2026090302.grapefruitdesk.com 4 2026-09-03 2026-09-11
www.cert2026090302.grapefruitdesk.com 4 2026-09-03 2026-09-11
cert2026091502.grapefruitdesk.com 5 2026-09-15 2026-09-15
www.cert2026091502.grapefruitdesk.com 5 2026-09-15 2026-09-15
cert2026091602.grapefruitdesk.com 2 2026-09-16 2026-09-16
www.cert2026091602.grapefruitdesk.com 2 2026-09-16 2026-09-16
cert2026090802.grapefruitdesk.com 2 2026-09-08 2026-09-08
www.cert2026090802.grapefruitdesk.com 2 2026-09-08 2026-09-08
cert2026090902.grapefruitdesk.com 1 2026-09-09 2026-09-09
www.cert2026090902.grapefruitdesk.com 1 2026-09-09 2026-09-09
san2.grapefruitdesk.com 2 2026-06-11 2026-06-11
test2.grapefruitdesk.com 1 2026-09-14 2026-09-14
cert2026091003.grapefruitdesk.com 1 2026-09-10 2026-09-10
www.cert2026091003.grapefruitdesk.com 1 2026-09-10 2026-09-10
303.grapefruitdesk.com 7 2026-04-22 2026-10-06
www.303.grapefruitdesk.com 7 2026-04-22 2026-10-06
cert2026090303.grapefruitdesk.com 4 2026-09-03 2026-09-03
www.cert2026090303.grapefruitdesk.com 4 2026-09-03 2026-09-03
cert2026091503.grapefruitdesk.com 1 2026-09-15 2026-09-15
www.cert2026091503.grapefruitdesk.com 1 2026-09-15 2026-09-15
cert2026091603.grapefruitdesk.com 2 2026-09-16 2026-09-16
www.cert2026091603.grapefruitdesk.com 2 2026-09-16 2026-09-16
cert2026090903.grapefruitdesk.com 1 2026-09-09 2026-09-09
www.cert2026090903.grapefruitdesk.com 1 2026-09-09 2026-09-09
cert2026091004.grapefruitdesk.com 1 2026-09-10 2026-09-10
www.cert2026091004.grapefruitdesk.com 1 2026-09-10 2026-09-10
cert2026091504.grapefruitdesk.com 2 2026-09-15 2026-09-15
www.cert2026091504.grapefruitdesk.com 2 2026-09-15 2026-09-15
cert2026091604.grapefruitdesk.com 2 2026-09-16 2026-09-16
www.cert2026091604.grapefruitdesk.com 2 2026-09-16 2026-09-16
cert2026090804.grapefruitdesk.com 1 2026-09-08 2026-09-08
www.cert2026090804.grapefruitdesk.com 1 2026-09-08 2026-09-08
cert2026090904.grapefruitdesk.com 2 2026-09-09 2026-09-09
www.cert2026090904.grapefruitdesk.com 2 2026-09-09 2026-09-09
test261005.grapefruitdesk.com 2 2026-10-05 2026-10-05
cert2026091005.grapefruitdesk.com 1 2026-09-11 2026-09-11
www.cert2026091005.grapefruitdesk.com 1 2026-09-11 2026-09-11
cert2026091605.grapefruitdesk.com 2 2026-09-16 2026-09-16
www.cert2026091605.grapefruitdesk.com 2 2026-09-16 2026-09-16
cert2026091506.grapefruitdesk.com 1 2026-09-15 2026-09-15
www.cert2026091506.grapefruitdesk.com 1 2026-09-15 2026-09-15
cert2026090906.grapefruitdesk.com 1 2026-09-09 2026-09-09
www.cert2026090906.grapefruitdesk.com 1 2026-09-09 2026-09-09
cert2026091507.grapefruitdesk.com 2 2026-09-15 2026-09-15
www.cert2026091507.grapefruitdesk.com 2 2026-09-15 2026-09-15
cert2026091607.grapefruitdesk.com 2 2026-09-16 2026-09-16
www.cert2026091607.grapefruitdesk.com 2 2026-09-16 2026-09-16
cert2026091508.grapefruitdesk.com 2 2026-09-15 2026-09-15
www.cert2026091508.grapefruitdesk.com 2 2026-09-15 2026-09-15
valid.grapefruitdesk.com 6 2026-04-22 2026-10-06
www.valid.grapefruitdesk.com 6 2026-04-22 2026-10-06
acme.grapefruitdesk.com 8 2026-04-28 2026-09-16
www.acme.grapefruitdesk.com 8 2026-04-28 2026-09-16
api.grapefruitdesk.com 156 2026-06-11 2026-10-09
demo.grapefruitdesk.com 7 2026-08-13 2026-08-13
csp.grapefruitdesk.com 3 2026-07-31 2026-09-25
www.csp.grapefruitdesk.com 3 2026-07-31 2026-09-25
demo.test.grapefruitdesk.com 4 2026-08-11 2026-08-12
www.grapefruitdesk.com 764 2026-04-16 2026-10-09

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