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.

12 hosts · 244 ms

HostCertsFirst seenLast seenDNS
m3.marketing.icicilombard.com 4 2025-06-26 2026-05-08 ok
res3.marketing.icicilombard.com 5 2025-06-26 2026-05-08 ok
t3.marketing.icicilombard.com 4 2025-06-26 2026-05-08 ok
m4.marketing.icicilombard.com 4 2025-06-26 2026-05-08 ok
res4.marketing.icicilombard.com 5 2025-06-26 2026-05-08 ok
t4.marketing.icicilombard.com 4 2025-06-26 2026-05-08 ok
m5.marketing.icicilombard.com 4 2025-06-26 2026-05-08 ok
res5.marketing.icicilombard.com 5 2025-06-26 2026-05-08 ok
t5.marketing.icicilombard.com 4 2025-06-26 2026-05-08 ok
m.marketing.icicilombard.com 4 2025-06-26 2026-05-08 ok
res.marketing.icicilombard.com 5 2025-06-26 2026-05-08 ok
t.marketing.icicilombard.com 5 2025-06-26 2026-05-08 ok

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