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.

7 hosts · 358 ms

HostCertsFirst seenLast seenDNS
convivasolutions.com 5 2025-06-10 2026-06-29 ok
*.convivasolutions.com 2 2025-06-10 2026-06-09 —
iqserviceqa.convivasolutions.com 1 2026-04-23 2026-04-23 nxdomain
np-dynatrace.convivasolutions.com 2 2026-09-04 2026-09-04 nxdomain
iqservice.convivasolutions.com 1 2026-04-22 2026-04-22 nxdomain
fairwarning.convivasolutions.com 3 2025-06-27 2026-06-29 nxdomain
iqservicedev.convivasolutions.com 1 2026-04-23 2026-04-23 nxdomain

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