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.

18 hosts · 370 ms

HostCertsFirst seenLast seenDNS
24hourfit.com 4 2025-10-08 2025-12-10 nodata
*.24hourfit.com 3 2025-12-01 2025-12-10 —
vdc1-cese-01.24hourfit.com 1 2025-10-08 2025-10-08 ok
www.vdc1-cese-01.24hourfit.com 1 2025-10-08 2025-10-08 nxdomain
vdc2-cese-01.24hourfit.com 1 2025-10-08 2025-10-08 ok
vpn1.24hourfit.com 1 2026-02-08 2026-02-08 ok
vpn2.24hourfit.com 1 2026-02-08 2026-02-08 ok
myvpn2.24hourfit.com 1 2025-09-16 2025-09-16 nxdomain
www.myvpn2.24hourfit.com 1 2025-09-16 2025-09-16 nxdomain
mpos-qa.24hourfit.com 2 2025-09-09 2026-09-17 nxdomain
www.mpos-qa.24hourfit.com 2 2025-09-09 2026-09-17 nxdomain
expresswaye.24hourfit.com 1 2025-10-08 2025-10-08 ok
vpn.24hourfit.com 1 2026-02-08 2026-02-08 nxdomain
www.vpn.24hourfit.com 1 2026-02-08 2026-02-08 nxdomain
mpos.24hourfit.com 4 2025-09-09 2026-09-17 nxdomain
www.mpos.24hourfit.com 4 2025-09-09 2026-09-17 nxdomain
mpos-dev.24hourfit.com 2 2025-09-09 2026-09-17 nxdomain
www.mpos-dev.24hourfit.com 2 2025-09-09 2026-09-17 nxdomain

Programmatic access, with DNS A records: API GET /v1/hosts/24hourfit.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/24hourfit.com.