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.

21 hosts · 287 ms

HostCertsFirst seenLast seenDNS
simera-sense.com 21 2025-08-17 2026-09-18 ok
*.simera-sense.com 5 2025-10-09 2026-08-18 —
sscptoos01.simera-sense.com 1 2026-03-01 2026-03-01 nodata
sscptdev02.simera-sense.com 1 2026-01-29 2026-01-29 nodata
sscptapp03.simera-sense.com 1 2026-04-24 2026-04-24 nodata
gitlab.simera-sense.com 2 2026-03-23 2026-08-02 ok
fileshare.simera-sense.com 3 2025-11-14 2026-06-10 ok
marketing.simera-sense.com 6 2026-05-19 2026-09-14 ok
plm.simera-sense.com 1 2025-10-13 2025-10-13 nodata
erp.simera-sense.com 2 2025-10-03 2026-06-29 ok
test-erp.simera-sense.com 1 2026-06-29 2026-06-29 ok
erp-qas.simera-sense.com 1 2026-06-30 2026-06-30 ok
mes.simera-sense.com 2 2026-01-12 2026-05-31 ok
mta-sts.simera-sense.com 3 2026-06-29 2026-09-22 ok
erp-uat.simera-sense.com 1 2026-06-30 2026-06-30 ok
support.simera-sense.com 8 2026-04-30 2026-08-26 ok
itsupport.simera-sense.com 10 2026-06-03 2026-09-30 ok
erp-dev.simera-sense.com 1 2026-06-30 2026-06-30 ok
mes-dev.simera-sense.com 2 2026-08-14 2026-08-14 ok
www.simera-sense.com 22 2025-08-17 2026-09-16 ok
erp-sbx.simera-sense.com 1 2026-06-30 2026-06-30 ok

Programmatic access, with DNS A records: API GET /v1/hosts/simera-sense.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/simera-sense.com.