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 · 239 ms

HostCertsFirst seenLast seenDNS
emerge.nz 11 2026-05-31 2026-09-26 ok
web.emerge.nz 6 2026-04-26 2026-08-21 ok
api.emerge.nz 2 2026-08-19 2026-08-19 ok
dev.api.emerge.nz 2 2026-08-14 2026-08-14 ok
global.emerge.nz 2 2025-09-11 2026-08-12 ok
posadmin.emerge.nz 3 2026-07-02 2026-07-24 ok
*.posadmin.emerge.nz 1 2026-07-02 2026-07-02 —
app.emerge.nz 4 2026-04-18 2026-08-14 ok
pos.emerge.nz 10 2026-07-02 2026-07-24 ok
*.pos.emerge.nz 7 2026-07-02 2026-07-06 —
checkout.emerge.nz 2 2026-08-13 2026-08-13 nodata
*.checkout.emerge.nz 2 2026-08-13 2026-08-13 —
dev.emerge.nz 5 2026-08-13 2026-09-10 ok
www.emerge.nz 9 2026-05-31 2026-09-26 ok
pay.emerge.nz 6 2026-05-31 2026-09-26 ok

Programmatic access, with DNS A records: API GET /v1/hosts/emerge.nz (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/emerge.nz.