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.

21 hosts · 268 ms

HostCertsFirst seenLast seenDNS
enercalc.com 9 2026-05-26 2026-09-15 ok
media.enercalc.com 1 2025-11-16 2025-11-16 ok
sa.enercalc.com 5 2026-05-19 2026-09-19 ok
sel20doc.enercalc.com 2 2026-05-11 2026-05-11 ok
cloud.enercalc.com 1 2025-11-30 2025-11-30 ok
signature.enercalc.com 3 2025-10-13 2026-09-13 ok
auth.enercalc.com 8 2026-05-06 2026-07-30 nxdomain
jack.enercalc.com 5 2026-05-26 2026-09-28 ok
install.enercalc.com 2 2025-07-29 2026-06-29 ok
m.enercalc.com 2 2026-08-13 2026-08-13 ok
sgtm.enercalc.com 4 2026-05-29 2026-09-13 ok
origin.enercalc.com 2 2026-09-13 2026-09-14 ok
vpn.enercalc.com 1 2025-12-09 2025-12-09 nxdomain
order.enercalc.com 5 2026-05-15 2026-09-11 ok
docs.enercalc.com 6 2026-07-15 2026-09-15 ok
updates.enercalc.com 1 2025-12-06 2025-12-06 ok
assets.enercalc.com 2 2025-09-28 2026-08-29 ok
mta-sts.enercalc.com 4 2026-04-19 2026-08-16 ok
screencasts.enercalc.com 1 2025-12-28 2025-12-28 ok
authkit.enercalc.com 6 2026-05-06 2026-07-04 ok
www.enercalc.com 8 2026-05-26 2026-09-15 ok

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