Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

14 hosts · 214 ms

HostCertsFirst seenLast seen
justfly.com 1 2025-10-27 2025-10-27
*.justfly.com 1 2025-10-27 2025-10-27
url7152.justfly.com 12 2026-05-19 2026-09-15
ai.justfly.com 5 2026-05-09 2026-09-06
gb-api.justfly.com 8 2026-05-16 2026-09-11
hotel.justfly.com 14 2026-05-18 2026-09-14
m.justfly.com 11 2026-05-30 2026-09-26
fp.justfly.com 7 2025-06-15 2026-09-04
hotels.justfly.com 8 2026-05-17 2026-09-12
gass.justfly.com 5 2026-04-18 2026-09-27
cf-assets.justfly.com 22 2026-04-17 2026-08-23
www.justfly.com 11 2026-05-31 2026-09-27
astrology.justfly.com 10 2026-04-21 2026-08-17
gb-proxy.justfly.com 10 2026-05-16 2026-09-11

Programmatic access: API GET /v1/hosts/justfly.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/justfly.com.