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.

73 hosts · 460 ms

HostCertsFirst seenLast seenDNS
flexopus.com 10 2026-04-28 2026-09-11 ok
*.flexopus.com 5 2026-04-28 2026-08-28 —
hih-v1.flexopus.com 5 2026-04-22 2026-08-20 ok
horn-v1.flexopus.com 5 2026-05-10 2026-09-07 ok
aaa.flexopus.com 5 2026-05-23 2026-09-20 ok
aaa.aaa.flexopus.com 5 2026-05-23 2026-09-20 ok
nic.aaa.flexopus.com 5 2026-05-23 2026-09-20 ok
ufa.flexopus.com 5 2026-04-22 2026-08-20 ok
fritz-kola.flexopus.com 5 2026-05-10 2026-09-07 ok
fritzkola.flexopus.com 5 2026-04-22 2026-08-20 ok
flexopus-nbg-2.infra.flexopus.com 4 2026-04-09 2026-08-08 ok
pass.infra.flexopus.com 5 2026-05-29 2026-09-26 nxdomain
db.flexopus.com 5 2026-04-22 2026-08-20 ok
astoc.flexopus.com 5 2026-05-15 2026-09-12 ok
help-old.flexopus.com 5 2026-05-29 2026-09-27 ok
asd.flexopus.com 5 2026-05-18 2026-09-15 ok
brillhygiene.flexopus.com 5 2026-05-10 2026-09-07 ok
apicore.flexopus.com 5 2026-05-18 2026-09-15 ok
demo.apicore.flexopus.com 5 2026-05-18 2026-09-15 ok
site.flexopus.com 5 2026-05-11 2026-09-08 ok
help-archive.flexopus.com 4 2026-04-10 2026-08-08 ok
kirchhoff.flexopus.com 5 2026-04-22 2026-08-20 ok
lirchhoff.flexopus.com 5 2026-04-22 2026-08-20 ok
portal.staging.flexopus.com 5 2026-05-29 2026-09-27 ok
blog.flexopus.com 5 2026-05-18 2026-09-15 ok
www.hih.flexopus.com 5 2026-04-28 2026-08-28 nxdomain
portal.flexopus.com 5 2026-05-08 2026-09-06 ok
brill.flexopus.com 5 2026-05-11 2026-09-08 ok
transmaritim.flexopus.com 5 2026-04-22 2026-08-20 ok
euriocn.flexopus.com 5 2026-04-22 2026-08-20 ok
banauten.flexopus.com 5 2026-05-23 2026-09-20 ok
www.banauten.flexopus.com 5 2026-05-23 2026-09-20 ok
admin.flexopus.com 5 2026-04-22 2026-08-20 ok
www.euricon.flexopus.com 5 2026-05-10 2026-09-07 ok
*.demo.flexopus.com 4 2026-06-07 2026-10-05 —
api.demo.flexopus.com 5 2026-04-22 2026-08-20 ok
lillydoo.flexopus.com 5 2026-04-23 2026-08-21 ok
foo.flexopus.com 5 2026-05-23 2026-09-20 ok
sitemap.flexopus.com 5 2026-05-18 2026-09-15 ok
old.sitemap.flexopus.com 5 2026-04-22 2026-08-20 ok
store.sitemap.flexopus.com 5 2026-04-22 2026-08-20 ok
demo.sitemap.flexopus.com 5 2026-04-22 2026-08-20 ok
shop.sitemap.flexopus.com 5 2026-04-22 2026-08-20 ok
test.sitemap.flexopus.com 5 2026-04-22 2026-08-20 ok
dev.sitemap.flexopus.com 5 2026-04-22 2026-08-20 ok
help.flexopus.com 10 2026-05-18 2026-09-26 ok
app.flexopus.com 5 2026-04-28 2026-08-28 nodata
backup.flexopus.com 5 2026-05-10 2026-09-07 ok
brill-partner.flexopus.com 5 2026-05-11 2026-09-08 ok
*.services.flexopus.com 5 2026-04-28 2026-08-28 —
monitoring.services.flexopus.com 5 2026-05-18 2026-09-16 ok
oftp.services.flexopus.com 5 2026-05-31 2026-09-28 ok
gateway.services.flexopus.com 4 2026-04-13 2026-08-12 ok
sitemaps.flexopus.com 5 2026-04-28 2026-08-28 nodata
wordpress.flexopus.com 5 2026-05-18 2026-09-15 ok
markus.flexopus.com 5 2026-04-22 2026-08-20 ok
status.flexopus.com 10 2026-05-10 2026-09-26 ok
support.flexopus.com 14 2026-05-06 2026-09-01 ok
test.flexopus.com 5 2026-05-18 2026-09-15 ok
old.test.flexopus.com 5 2026-05-18 2026-09-15 ok
store.test.flexopus.com 5 2026-05-18 2026-09-15 ok
staging.test.flexopus.com 5 2026-04-22 2026-08-20 ok
demo.test.flexopus.com 5 2026-05-18 2026-09-15 ok
magento.test.flexopus.com 5 2026-05-18 2026-09-15 ok
shop.test.flexopus.com 5 2026-05-18 2026-09-15 ok
dev.test.flexopus.com 5 2026-05-18 2026-09-15 ok
dev.flexopus.com 5 2026-05-23 2026-09-20 ok
preview.flexopus.com 5 2026-05-29 2026-09-26 ok
demo.preview.flexopus.com 5 2026-05-29 2026-09-26 ok
www.flexopus.com 11 2026-04-28 2026-08-29 ok
demo.xxx.flexopus.com 5 2026-05-10 2026-09-07 ok
sentry.flexopus.com 5 2026-05-10 2026-09-08 ok
fritz.flexopus.com 5 2026-04-22 2026-08-20 ok

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