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.

15 hosts · 224 ms

HostCertsFirst seenLast seenDNS
splitwise.com 31 2026-04-28 2026-09-05 ok
*.splitwise.com 16 2026-04-30 2026-08-30 —
kb.splitwise.com 6 2026-05-10 2026-09-09 ok
secure.splitwise.com 6 2026-04-28 2026-08-26 ok
live.splitwise.com 6 2026-04-15 2026-08-11 ok
blog.splitwise.com 2 2026-06-12 2026-08-20 ok
plates.splitwise.com 5 2026-04-25 2026-08-24 ok
emails.splitwise.com 2 2025-06-16 2026-06-01 ok
assets.splitwise.com 2 2025-09-07 2026-08-08 ok
status.splitwise.com 5 2026-04-28 2026-08-30 ok
enrollment.splitwise.com 5 2026-05-15 2026-09-14 ok
dev.splitwise.com 5 2026-04-29 2026-08-28 ok
www.splitwise.com 6 2026-04-28 2026-08-27 ok
*.sandbox.splitwise.com 10 2026-05-10 2026-09-05 —
enrollment.sandbox.splitwise.com 5 2026-05-15 2026-09-14 ok

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