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.

34 hosts · 328 ms

HostCertsFirst seenLast seenDNS
gate1travel.com 28 2026-04-14 2026-09-29 ok
*.gate1travel.com 20 2026-04-14 2026-09-19 —
qa.gate1travel.com 8 2026-04-19 2026-08-15 ok
static.gate1travel.com 14 2026-06-03 2026-09-30 ok
productchange.gate1travel.com 12 2026-05-08 2026-09-03 ok
api.gate1travel.com 13 2026-06-03 2026-09-30 ok
faq-api.gate1travel.com 8 2026-04-21 2026-08-17 ok
helpdesk.gate1travel.com 12 2026-05-10 2026-09-06 ok
internal.gate1travel.com 12 2026-06-03 2026-09-29 ok
portal.gate1travel.com 10 2026-05-01 2026-08-27 ok
teams-todo.gate1travel.com 10 2026-05-08 2026-09-03 ok
dc1-dr.colo.gate1travel.com 10 2025-06-25 2026-07-13 nxdomain
www.dc1-dr.colo.gate1travel.com 10 2025-06-25 2026-07-13 nxdomain
dc2-dr.colo.gate1travel.com 11 2025-07-06 2026-09-14 nxdomain
www.dc2-dr.colo.gate1travel.com 11 2025-07-06 2026-09-14 nxdomain
sso.gate1travel.com 11 2026-06-03 2026-09-29 ok
dc-01-vm.corp.gate1travel.com 2 2025-11-21 2026-01-02 nxdomain
www.dc-01-vm.corp.gate1travel.com 2 2025-11-21 2026-01-02 nxdomain
dc-02-vm.corp.gate1travel.com 3 2026-08-17 2026-08-17 nxdomain
www.dc-02-vm.corp.gate1travel.com 3 2026-08-17 2026-08-17 nxdomain
dc-01-serv.corp.gate1travel.com 4 2026-01-02 2026-07-23 nxdomain
www.dc-01-serv.corp.gate1travel.com 4 2026-01-02 2026-07-23 nxdomain
teams-faq.gate1travel.com 8 2026-05-08 2026-09-03 ok
analytics.gate1travel.com 12 2026-05-21 2026-09-16 ok
preview-analytics.gate1travel.com 10 2026-05-21 2026-09-17 ok
l.notifications.gate1travel.com 8 2026-04-25 2026-08-21 ok
s.notifications.gate1travel.com 12 2026-05-08 2026-09-04 ok
w.notifications.gate1travel.com 8 2026-04-27 2026-08-23 ok
x.notifications.gate1travel.com 9 2026-05-18 2026-09-14 ok
projects.gate1travel.com 10 2026-05-08 2026-09-03 ok
development.gate1travel.com 8 2026-04-27 2026-08-23 ok
dev.gate1travel.com 11 2026-05-21 2026-09-16 ok
internal-stsw.gate1travel.com 10 2026-06-03 2026-09-29 ok
www.gate1travel.com 8 2026-06-03 2026-09-29 ok

Programmatic access, with DNS A records: API GET /v1/hosts/gate1travel.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/gate1travel.com.