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) · 256 ms

Download CSV
HostCertsFirst seenLast seen
datadoghq.com 12 2025-08-14 2026-09-22
*.datadoghq.com 12 2025-08-14 2026-09-22
uk1.datadoghq.com 3 2026-05-13 2026-09-28
*.uk1.datadoghq.com 6 2026-05-01 2026-09-28
*.profile.uk1.datadoghq.com 4 2026-04-30 2026-09-17
*.mrf.uk1.datadoghq.com 3 2026-04-30 2026-09-16
*.logs.mrf.uk1.datadoghq.com 2 2026-05-01 2026-09-16
*.agent.mrf.uk1.datadoghq.com 2 2026-05-01 2026-09-16
saml-signing.uk1.datadoghq.com 2 2026-06-11 2026-06-11
*.api.uk1.datadoghq.com 4 2026-04-30 2026-09-16
*.ff-cdn.uk1.datadoghq.com 1 2026-05-29 2026-05-29
ufc-server.ff-cdn.uk1.datadoghq.com 1 2026-07-16 2026-07-16
ufc-client.ff-cdn.uk1.datadoghq.com 1 2026-07-16 2026-07-16
preview.ff-cdn.uk1.datadoghq.com 1 2026-07-14 2026-07-14
*.integrations.otlp.uk1.datadoghq.com 4 2026-04-30 2026-09-15
*.synthetics.uk1.datadoghq.com 2 2026-05-01 2026-09-16
*.logs.uk1.datadoghq.com 2 2026-04-30 2026-09-15
status.uk1.datadoghq.com 2 2026-08-11 2026-10-09
*.agent.uk1.datadoghq.com 3 2026-04-30 2026-09-16
ap1.datadoghq.com 3 2025-10-23 2026-08-18
*.ap1.datadoghq.com 5 2025-10-23 2026-09-28
profile.ap1.datadoghq.com 3 2026-05-07 2026-09-22
*.profile.ap1.datadoghq.com 3 2026-05-07 2026-09-22
*.mrf.ap1.datadoghq.com 2 2025-09-03 2026-06-25
*.logs.mrf.ap1.datadoghq.com 2 2025-09-03 2026-06-25
*.agent.mrf.ap1.datadoghq.com 2 2025-09-03 2026-06-25
*.ff-cdn.ap1.datadoghq.com 3 2025-08-28 2026-08-15
ufc-server.ff-cdn.ap1.datadoghq.com 1 2026-07-16 2026-07-16
ufc-client.ff-cdn.ap1.datadoghq.com 1 2026-07-16 2026-07-16
preview.ff-cdn.ap1.datadoghq.com 2 2026-03-10 2026-08-11
integrations.otlp.ap1.datadoghq.com 3 2025-11-06 2026-09-06
*.integrations.otlp.ap1.datadoghq.com 3 2025-11-06 2026-09-06
synthetics.ap1.datadoghq.com 3 2026-05-07 2026-09-22
*.synthetics.ap1.datadoghq.com 3 2026-05-07 2026-09-22
logs.ap1.datadoghq.com 3 2026-05-07 2026-09-22
*.logs.ap1.datadoghq.com 3 2026-05-07 2026-09-22
status.ap1.datadoghq.com 6 2026-05-03 2026-08-29
agent.ap1.datadoghq.com 3 2026-05-07 2026-09-22
*.agent.ap1.datadoghq.com 3 2026-05-07 2026-09-22
ap2.datadoghq.com 5 2026-01-18 2026-01-18
*.ap2.datadoghq.com 8 2026-01-18 2026-07-17
profile.ap2.datadoghq.com 1 2026-01-22 2026-01-22
*.profile.ap2.datadoghq.com 1 2026-01-22 2026-01-22
*.ff-cdn.ap2.datadoghq.com 2 2025-10-07 2026-09-24
ufc-server.ff-cdn.ap2.datadoghq.com 1 2026-07-16 2026-07-16
ufc-client.ff-cdn.ap2.datadoghq.com 1 2026-07-16 2026-07-16
preview.ff-cdn.ap2.datadoghq.com 2 2026-03-10 2026-08-11
integrations.otlp.ap2.datadoghq.com 2 2025-11-06 2026-09-06
*.integrations.otlp.ap2.datadoghq.com 2 2025-11-06 2026-09-06
synthetics.ap2.datadoghq.com 1 2026-01-22 2026-01-22
*.synthetics.ap2.datadoghq.com 1 2026-01-22 2026-01-22
logs.ap2.datadoghq.com 1 2026-01-22 2026-01-22
*.logs.ap2.datadoghq.com 1 2026-01-22 2026-01-22
status.ap2.datadoghq.com 4 2026-06-18 2026-10-14
agent.ap2.datadoghq.com 1 2026-01-23 2026-01-23
*.agent.ap2.datadoghq.com 1 2026-01-23 2026-01-23
us3.datadoghq.com 7 2026-01-18 2026-01-18
*.us3.datadoghq.com 8 2026-01-18 2026-01-21
profile.us3.datadoghq.com 1 2026-02-02 2026-02-02
*.profile.us3.datadoghq.com 1 2026-02-02 2026-02-02
*.mrf.us3.datadoghq.com 3 2026-04-10 2026-08-16
*.logs.mrf.us3.datadoghq.com 3 2026-04-09 2026-08-15
*.agent.mrf.us3.datadoghq.com 3 2026-04-09 2026-08-15
*.ff-cdn.us3.datadoghq.com 3 2025-08-28 2026-08-15
ufc-server.ff-cdn.us3.datadoghq.com 1 2026-07-16 2026-07-16
ufc-client.ff-cdn.us3.datadoghq.com 1 2026-07-16 2026-07-16
preview.ff-cdn.us3.datadoghq.com 2 2026-03-10 2026-08-11
integrations.otlp.us3.datadoghq.com 2 2025-11-06 2026-09-06
*.integrations.otlp.us3.datadoghq.com 2 2025-11-06 2026-09-06
synthetics.us3.datadoghq.com 1 2026-02-02 2026-02-02
*.synthetics.us3.datadoghq.com 1 2026-02-02 2026-02-02
logs.us3.datadoghq.com 1 2026-02-02 2026-02-02
*.logs.us3.datadoghq.com 1 2026-02-02 2026-02-02
status.us3.datadoghq.com 11 2026-06-03 2026-09-30
agent.us3.datadoghq.com 1 2026-01-19 2026-01-19
*.agent.us3.datadoghq.com 1 2026-01-19 2026-01-19
us4.datadoghq.com 4 2025-08-06 2026-10-13
*.us4.datadoghq.com 4 2025-08-06 2026-10-13
*.synthetics.us4.datadoghq.com 2 2026-05-07 2026-09-22
us5.datadoghq.com 4 2025-07-21 2026-10-02
*.us5.datadoghq.com 6 2025-06-28 2026-10-02
profile.us5.datadoghq.com 3 2025-07-21 2026-10-02
*.profile.us5.datadoghq.com 3 2025-07-21 2026-10-02
*.mrf.us5.datadoghq.com 2 2025-08-14 2026-06-05
*.logs.mrf.us5.datadoghq.com 2 2025-08-15 2026-06-07
*.agent.mrf.us5.datadoghq.com 3 2025-08-15 2026-06-08
*.ff-cdn.us5.datadoghq.com 3 2025-08-28 2026-08-15
ufc-server.ff-cdn.us5.datadoghq.com 1 2026-07-16 2026-07-16
ufc-client.ff-cdn.us5.datadoghq.com 1 2026-07-16 2026-07-16
preview.ff-cdn.us5.datadoghq.com 2 2026-03-10 2026-08-11
integrations.otlp.us5.datadoghq.com 2 2025-11-06 2026-09-06
*.integrations.otlp.us5.datadoghq.com 2 2025-11-06 2026-09-06
synthetics.us5.datadoghq.com 4 2025-07-21 2026-10-02
*.synthetics.us5.datadoghq.com 4 2025-07-21 2026-10-02
logs.us5.datadoghq.com 3 2025-07-21 2026-10-02
*.logs.us5.datadoghq.com 5 2025-07-21 2026-10-02
status.us5.datadoghq.com 6 2026-05-19 2026-09-15
agent.us5.datadoghq.com 4 2025-07-21 2026-10-02
*.agent.us5.datadoghq.com 4 2025-07-21 2026-10-02
prtest07.datadoghq.com 2 2025-11-26 2026-09-26

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/datadoghq.com.

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/datadoghq.com.