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.

19 hosts · 385 ms

HostCertsFirst seenLast seenDNS
dtdc.com 7 2025-11-20 2026-07-06 ok
*.dtdc.com 11 2025-11-20 2026-09-09 —
cptrackprod.dtdc.com 3 2026-04-15 2026-09-10 ok
workspace.dtdc.com 6 2026-03-23 2026-09-06 ok
*.workspace.dtdc.com 4 2026-03-23 2026-09-06 —
login.workspace.dtdc.com 1 2026-03-23 2026-03-23 ok
www.workspace.dtdc.com 2 2026-03-23 2026-03-23 ok
singapore.dtdc.com 2 2025-08-04 2026-06-15 ok
frplusfg.dtdc.com 1 2025-08-16 2025-08-16 ok
stores.dtdc.com 1 2026-06-21 2026-06-21 ok
www.stores.dtdc.com 1 2026-06-21 2026-06-21 nxdomain
oneaccess.dtdc.com 4 2026-04-02 2026-09-16 ok
www.oneaccess.dtdc.com 4 2026-04-02 2026-09-16 nxdomain
stores-ctbsplus.dtdc.com 3 2025-08-27 2026-07-08 ok
frplusuat.dtdc.com 2 2025-07-30 2026-06-10 ok
guestmanagement.dtdc.com 1 2025-08-23 2025-08-23 ok
support.dtdc.com 10 2026-05-15 2026-09-10 ok
delivery.dtdc.com 3 2026-05-10 2026-08-25 ok
itseasy.dtdc.com 54 2026-04-28 2026-10-01 ok

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