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 · 339 ms

HostCertsFirst seenLast seenDNS
edwardmartin.com 9 2026-04-23 2026-08-25 ok
*.edwardmartin.com 2 2026-06-29 2026-08-25 —
i.edwardmartin.com 7 2026-04-26 2026-09-19 ok
cloud.mail.edwardmartin.com 2 2025-09-22 2026-09-09 ok
image.mail.edwardmartin.com 4 2025-10-08 2026-01-29 ok
click.mail.edwardmartin.com 3 2025-09-27 2026-09-17 ok
view.mail.edwardmartin.com 2 2025-09-23 2026-09-10 ok
pro.edwardmartin.com 10 2026-05-17 2026-07-29 ok
sftp.edwardmartin.com 3 2026-07-29 2026-09-26 ok
payments.edwardmartin.com 10 2026-05-13 2026-09-09 ok
t.edwardmartin.com 4 2026-04-21 2026-08-20 ok
new.edwardmartin.com 2 2026-07-08 2026-07-08 ok
www.edwardmartin.com 8 2026-04-24 2026-07-05 ok
pay.edwardmartin.com 3 2025-10-03 2026-10-03 ok
www.pay.edwardmartin.com 3 2025-10-03 2026-10-03 nxdomain

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