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.

60 hosts · 395 ms

HostCertsFirst seenLast seenDNS
simple.life 42 2026-04-14 2026-10-04 ok
*.simple.life 26 2025-08-24 2026-10-04 —
kova.simple.life 5 2026-07-24 2026-09-21 ok
sub.simple.life 16 2026-04-13 2026-10-07 ok
calisthenic.simple.life 6 2026-07-07 2026-09-04 ok
ugc-static.simple.life 14 2026-04-17 2026-08-13 ok
med.simple.life 10 2026-04-27 2026-08-23 ok
unsubscribe.simple.life 18 2026-04-17 2026-08-15 ok
calorie.simple.life 10 2026-05-25 2026-09-20 ok
payment-engine.simple.life 2 2026-05-05 2026-10-05 ok
delete.simple.life 22 2026-06-03 2026-09-29 ok
move.simple.life 6 2026-06-30 2026-08-28 ok
go.move.simple.life 1 2026-09-09 2026-09-09 ok
app.move.simple.life 6 2026-07-07 2026-09-04 ok
fasting.simple.life 11 2026-05-25 2026-09-20 ok
cf-api.simple.life 10 2026-05-10 2026-09-06 ok
martech-api.simple.life 10 2026-04-15 2026-08-11 ok
support-api.simple.life 12 2026-04-13 2026-08-09 ok
strapi.simple.life 12 2026-04-13 2026-10-07 ok
link.simple.life 15 2026-05-04 2026-08-30 ok
social.simple.life 10 2026-04-29 2026-08-25 ok
c.email.simple.life 2 2025-10-09 2026-09-09 ok
c.crm.simple.life 2 2025-10-08 2026-09-08 ok
api.dataplatform.simple.life 2 2025-06-23 2026-05-24 ok
telemetry.dataplatform.simple.life 2 2025-06-23 2026-05-24 ok
help-login.simple.life 8 2026-05-17 2026-09-12 ok
support-automation.simple.life 9 2026-05-20 2026-09-15 ok
c.go.simple.life 12 2026-06-08 2026-10-04 ok
demo.simple.life 14 2026-04-13 2026-10-07 ok
help.simple.life 10 2026-05-09 2026-09-04 ok
inapp.simple.life 18 2026-04-29 2026-08-26 ok
together.simple.life 11 2026-05-21 2026-09-16 ok
calculator.simple.life 8 2026-05-24 2026-09-19 ok
jobs.simple.life 11 2026-06-05 2026-10-07 ok
email-tracking-preferences.simple.life 2 2026-08-11 2026-08-11 ok
moves-updates.simple.life 2 2026-08-18 2026-08-18 ok
moves.simple.life 6 2026-05-04 2026-08-30 ok
help-moves.simple.life 4 2026-07-29 2026-09-26 ok
chat-moves.simple.life 12 2026-05-21 2026-09-16 ok
clicks.simple.life 2 2026-04-06 2026-09-06 ok
weightloss.simple.life 11 2026-05-25 2026-09-21 ok
assets.simple.life 12 2026-04-13 2026-10-07 ok
api.payments.simple.life 14 2026-04-13 2026-10-07 ok
chat.simple.life 9 2026-06-06 2026-10-02 ok
diet.simple.life 14 2026-05-25 2026-09-20 ok
asset.simple.life 2 2026-04-25 2026-09-25 ok
start.simple.life 3 2026-07-27 2026-09-24 ok
rest.simple.life 14 2026-04-13 2026-10-07 ok
ugc-static-dev.simple.life 9 2026-04-17 2026-08-13 ok
payment-api-dev.simple.life 2 2025-11-05 2026-10-06 ok
bloomly-dev.simple.life 11 2026-06-08 2026-10-04 ok
inapp.dev.simple.life 16 2026-04-30 2026-08-27 ok
api.payments.dev.simple.life 9 2026-05-27 2026-09-22 ok
www.simple.life 12 2026-04-13 2026-08-09 ok
support-legacy.simple.life 8 2026-05-02 2026-08-28 ok
survey.simple.life 10 2026-04-15 2026-08-11 ok
bloomly.simple.life 9 2026-06-04 2026-09-30 ok
c.my.simple.life 2 2025-10-09 2026-09-09 ok
library.simple.life 11 2026-04-13 2026-08-09 ok
quiz.simple.life 10 2026-04-13 2026-08-09 ok

Programmatic access, with DNS A records: API GET /v1/hosts/simple.life (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/simple.life.