Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

61 hosts · 352 ms

HostCertsFirst seenLast seenDNS
securecodewarrior.com 13 2026-02-13 2026-08-11 ok
*.securecodewarrior.com 7 2025-09-25 2026-08-26 —
prod.securecodewarrior.com 2 2026-04-06 2026-09-06 nodata
*.prod.securecodewarrior.com 2 2026-04-06 2026-09-06 —
training.prod.securecodewarrior.com 2 2026-04-04 2026-09-04 nodata
*.training.prod.securecodewarrior.com 2 2026-04-04 2026-09-04 —
prod-us.prod.securecodewarrior.com 2 2025-12-16 2026-01-28 nodata
*.prod-us.prod.securecodewarrior.com 2 2025-12-16 2026-01-28 —
*.mission.prod-us.prod.securecodewarrior.com 1 2026-01-28 2026-01-28 —
customertest.prod.securecodewarrior.com 2 2025-07-22 2026-06-22 nodata
*.customertest.prod.securecodewarrior.com 2 2025-07-22 2026-06-22 —
prod-eu.prod.securecodewarrior.com 2 2025-12-16 2026-01-28 nodata
*.prod-eu.prod.securecodewarrior.com 2 2025-12-16 2026-01-28 —
*.mission.prod-eu.prod.securecodewarrior.com 1 2026-01-28 2026-01-28 —
nonprod.securecodewarrior.com 3 2026-02-12 2026-07-22 nodata
*.nonprod.securecodewarrior.com 3 2026-02-12 2026-07-22 —
perf.nonprod.securecodewarrior.com 3 2025-07-11 2026-06-10 nodata
*.perf.nonprod.securecodewarrior.com 3 2025-07-11 2026-06-10 —
trackmail.nonprod.securecodewarrior.com 1 2026-02-09 2026-02-09 ok
pen.nonprod.securecodewarrior.com 3 2026-03-28 2026-08-28 nodata
*.pen.nonprod.securecodewarrior.com 3 2026-03-28 2026-08-28 —
uat.nonprod.securecodewarrior.com 3 2025-12-02 2026-07-24 nodata
*.uat.nonprod.securecodewarrior.com 3 2025-12-02 2026-07-24 —
sit.nonprod.securecodewarrior.com 3 2025-12-02 2026-07-24 nodata
*.sit.nonprod.securecodewarrior.com 3 2025-12-02 2026-07-24 —
*.interactive-labs.sit.nonprod.securecodewarrior.com 2 2026-03-03 2026-07-19 —
dev.nonprod.securecodewarrior.com 6 2025-11-03 2026-10-04 nodata
*.dev.nonprod.securecodewarrior.com 6 2025-11-03 2026-10-04 —
*.mission.dev.nonprod.securecodewarrior.com 5 2025-11-03 2026-10-04 —
dtp.dev.nonprod.securecodewarrior.com 1 2026-06-19 2026-06-19 ok
*.dtp.dev.nonprod.securecodewarrior.com 2 2026-06-19 2026-06-19 —
aitrustindex.nonprod.securecodewarrior.com 1 2026-06-05 2026-06-05 ok
groove.securecodewarrior.com 6 2026-04-22 2026-08-21 ok
sensei.securecodewarrior.com 3 2025-10-15 2026-09-14 nodata
*.sensei.securecodewarrior.com 3 2025-10-15 2026-09-14 —
experimental-completion-api.securecodewarrior.com 3 2026-02-18 2026-10-03 ok
claude-analytics.internal.securecodewarrior.com 1 2026-07-20 2026-07-20 ok
gtx6dtvtybto563ugylj78h6r0a2v5t.claude-analytics.internal.securecodewarrior.com 1 2026-07-20 2026-07-20 nxdomain
mission.securecodewarrior.com 4 2026-03-07 2026-09-14 ok
experiential-mission.securecodewarrior.com 2 2026-04-14 2026-09-14 ok
*.experiential-mission.securecodewarrior.com 2 2026-04-14 2026-09-14 —
*.mission.securecodewarrior.com 4 2026-03-07 2026-09-14 —
learn.securecodewarrior.com 12 2026-05-02 2026-08-28 ok
hello.securecodewarrior.com 2 2026-04-26 2026-04-26 ok
goto.securecodewarrior.com 6 2026-05-07 2026-09-02 ok
help.securecodewarrior.com 4 2026-04-17 2026-08-15 ok
shop.securecodewarrior.com 3 2026-04-10 2026-05-27 nxdomain
trustcenter.securecodewarrior.com 2 2025-10-08 2026-09-08 ok
discover.securecodewarrior.com 8 2026-05-06 2026-09-02 ok
fr.securecodewarrior.com 4 2026-04-15 2026-04-15 ok
insights.securecodewarrior.com 10 2026-04-16 2026-08-13 ok
mta-sts.securecodewarrior.com 3 2025-06-10 2026-05-11 ok
us.securecodewarrior.com 2 2025-12-14 2025-12-15 nodata
*.us.securecodewarrior.com 2 2025-12-14 2025-12-15 —
teleport.trustagent.securecodewarrior.com 2 2026-09-02 2026-09-02 nxdomain
direnity.dev.trustagent.securecodewarrior.com 1 2026-09-14 2026-09-14 ok
trust.securecodewarrior.com 4 2026-07-16 2026-09-06 ok
eu.securecodewarrior.com 4 2025-09-16 2026-08-16 nodata
*.eu.securecodewarrior.com 4 2025-09-16 2026-08-16 —
www.securecodewarrior.com 8 2026-04-14 2026-08-10 ok
aitrustindex.securecodewarrior.com 1 2026-06-09 2026-06-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/securecodewarrior.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/securecodewarrior.com.