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.

22 hosts · 367 ms

HostCertsFirst seenLast seenDNS
macktez.com 13 2026-05-08 2026-08-14 ok
cbd.macktez.com 5 2026-05-25 2026-09-22 ok
store.macktez.com 17 2026-05-20 2026-08-14 ok
blog.macktez.com 13 2026-05-20 2026-08-14 ok
track.macktez.com 10 2026-04-29 2026-09-07 ok
scim.macktez.com 27 2026-05-01 2026-10-04 ok
vpn.macktez.com 3 2025-12-09 2025-12-09 ok
www.vpn.macktez.com 3 2025-12-09 2025-12-09 nxdomain
mcp.macktez.com 3 2026-06-27 2026-08-27 ok
pnpserver.macktez.com 5 2026-05-25 2026-09-22 ok
tumblr.macktez.com 13 2026-05-19 2026-08-14 ok
monitor.macktez.com 3 2026-07-24 2026-09-25 ok
fms.macktez.com 2 2025-11-22 2026-09-28 ok
www.fms.macktez.com 1 2025-11-22 2025-11-22 nxdomain
payments.macktez.com 1 2026-09-14 2026-09-14 ok
client.macktez.com 8 2026-04-20 2026-08-16 ok
payment.macktez.com 3 2026-07-28 2026-09-14 ok
support.macktez.com 13 2026-06-02 2026-09-29 ok
dev.macktez.com 3 2026-06-13 2026-08-12 ok
fms.dev.macktez.com 1 2026-08-21 2026-08-21 ok
yellow.macktez.com 13 2026-05-19 2026-08-14 ok
www.macktez.com 13 2026-05-09 2026-08-14 ok

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