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.

77 hosts · 303 ms

Download CSV
HostCertsFirst seenLast seen
gitguardian.com 28 2026-05-01 2026-10-08
*.gitguardian.com 16 2026-06-12 2026-10-08
8506390.gitguardian.com 4 2026-09-01 2026-09-01
eu1.gitguardian.com 19 2026-06-12 2026-10-08
*.eu1.gitguardian.com 19 2026-06-12 2026-10-08
url877.eu1.gitguardian.com 2 2025-08-13 2026-07-14
dashboard.eu1.gitguardian.com 5 2026-06-02 2026-09-30
ggbridge.eu1.gitguardian.com 12 2026-06-12 2026-10-08
*.ggbridge.eu1.gitguardian.com 12 2026-06-12 2026-10-08
api.eu1.gitguardian.com 5 2026-06-02 2026-09-30
hook.eu1.gitguardian.com 5 2026-06-02 2026-09-30
mcp.eu1.gitguardian.com 5 2026-06-02 2026-09-30
url3927.gitguardian.com 7 2025-11-02 2026-09-01
c.gitguardian.com 4 2026-06-17 2026-10-15
cybersec.gitguardian.com 5 2026-05-18 2026-09-15
static.gitguardian.com 1 2026-01-07 2026-01-07
hasmycodeleaked.gitguardian.com 3 2026-01-19 2026-08-21
self-hosted.gitguardian.com 10 2026-06-13 2026-10-09
replicated.self-hosted.gitguardian.com 12 2026-06-12 2026-10-09
registry.self-hosted.gitguardian.com 8 2026-06-12 2026-10-08
proxy.self-hosted.gitguardian.com 10 2026-06-13 2026-10-10
preprod.gitguardian.com 19 2026-05-14 2026-09-19
*.preprod.gitguardian.com 19 2026-05-14 2026-09-19
hasmysecretleaked.preprod.gitguardian.com 5 2026-05-28 2026-09-25
dashboard.preprod.gitguardian.com 24 2026-05-22 2026-09-25
enterprise.preprod.gitguardian.com 14 2026-05-06 2026-10-08
contribute.preprod.gitguardian.com 4 2026-10-08 2026-10-08
api.preprod.gitguardian.com 24 2026-05-22 2026-09-25
hook.preprod.gitguardian.com 20 2026-05-22 2026-09-25
mcp.preprod.gitguardian.com 13 2026-05-25 2026-09-22
dashboard.gitguardian.com 19 2026-06-02 2026-10-12
ggbridge.gitguardian.com 17 2026-06-12 2026-10-08
*.ggbridge.gitguardian.com 17 2026-06-12 2026-10-08
enterprise.gitguardian.com 15 2026-05-12 2026-10-09
login.enterprise.gitguardian.com 10 2026-05-01 2026-08-28
blog.gitguardian.com 6 2026-07-08 2026-10-16
api.gitguardian.com 22 2025-09-28 2026-10-12
good-samaritan-api.gitguardian.com 9 2026-07-24 2026-09-22
*.api.gitguardian.com 1 2025-09-28 2025-09-28
checker.api.gitguardian.com 16 2026-06-04 2026-10-08
*.checker.api.gitguardian.com 13 2026-06-12 2026-10-08
preprod.checker.api.gitguardian.com 4 2026-05-14 2026-07-17
hook.gitguardian.com 19 2026-06-02 2026-10-12
grafana.internal.gitguardian.com 1 2025-07-23 2025-07-23
*.grafana.internal.gitguardian.com 1 2025-07-23 2025-07-23
saas-sentinel.gitguardian.com 10 2026-06-13 2026-10-09
www.saas-sentinel.gitguardian.com 8 2026-06-15 2026-10-12
url7224.mail.gitguardian.com 3 2025-11-04 2026-08-27
email.mail.gitguardian.com 4 2026-06-04 2026-10-02
url3626.test.mail.gitguardian.com 3 2025-10-29 2026-08-27
trail.gitguardian.com 5 2026-05-13 2026-09-10
good-samaritan.gitguardian.com 9 2026-07-24 2026-09-22
go.gitguardian.com 9 2026-07-16 2026-09-19
customerio.gitguardian.com 4 2025-08-15 2026-08-25
roadmap.gitguardian.com 3 2025-10-25 2026-09-24
mcp.gitguardian.com 12 2026-06-02 2026-09-30
vdp.gitguardian.com 15 2026-04-30 2026-09-02
provider.gitguardian.com 1 2026-03-30 2026-03-30
*.provider.gitguardian.com 1 2026-03-30 2026-03-30
transfer.gitguardian.com 3 2026-01-19 2026-08-21
api.ghuser.gitguardian.com 16 2026-06-05 2026-10-09
webhooks-receiver.gitguardian.com 17 2026-06-01 2026-10-08
s.gitguardian.com 5 2026-05-10 2026-09-07
labs.gitguardian.com 10 2026-06-14 2026-10-10
docs.gitguardian.com 2 2026-03-28 2026-08-28
sales.gitguardian.com 5 2026-05-01 2026-08-29
careers.gitguardian.com 11 2026-04-26 2026-10-07
agents.gitguardian.com 14 2026-07-13 2026-09-11
status.gitguardian.com 6 2026-05-08 2026-10-11
support.gitguardian.com 16 2025-10-02 2026-10-08
*.support.gitguardian.com 1 2025-10-02 2025-10-02
trust.gitguardian.com 11 2026-06-02 2026-09-28
api.dev.gitguardian.com 1 2025-12-25 2025-12-25
*.api.dev.gitguardian.com 1 2025-12-25 2025-12-25
www.gitguardian.com 12 2026-05-19 2026-09-14
satori-repository.gitguardian.com 1 2026-02-18 2026-02-18
ggscout-repository.gitguardian.com 2 2025-07-08 2026-06-26

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