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.

33 hosts · 348 ms

HostCertsFirst seenLast seenDNS
6ix.com 30 2026-04-24 2026-09-30 ok
*.6ix.com 18 2026-05-10 2026-09-30 —
download.6ix.com 6 2026-04-20 2026-08-16 ok
courses-6ix-com-backend.6ix.com 5 2026-05-30 2026-10-02 ok
myph.6ix.com 7 2026-06-03 2026-09-29 ok
ai.6ix.com 5 2026-05-14 2026-09-17 ok
api.6ix.com 5 2026-05-25 2026-09-23 ok
aibackendapi.6ix.com 5 2026-05-03 2026-09-01 ok
meetingsbackendapi.6ix.com 4 2026-04-16 2026-08-18 ok
videosbackendapi.6ix.com 5 2026-05-24 2026-09-22 ok
eventsbackendapi.6ix.com 10 2026-05-05 2026-09-08 ok
manageproapi.6ix.com 5 2026-04-22 2026-08-20 ok
stocksapi.6ix.com 4 2026-05-13 2026-07-13 ok
social.6ix.com 5 2026-05-25 2026-09-23 ok
login.6ix.com 10 2026-04-30 2026-08-27 ok
on.6ix.com 5 2026-04-25 2026-09-10 ok
authentication.6ix.com 5 2026-05-31 2026-09-26 ok
mcp.6ix.com 2 2026-10-01 2026-10-01 ok
app.6ix.com 5 2026-04-25 2026-08-27 ok
appbackendserver.6ix.com 3 2026-06-05 2026-08-04 ok
ads.6ix.com 4 2026-04-20 2026-08-22 ok
leads.6ix.com 4 2026-06-04 2026-10-05 ok
courses.6ix.com 5 2026-04-25 2026-08-27 ok
websites.6ix.com 5 2026-05-24 2026-09-26 ok
meetings.6ix.com 5 2026-05-21 2026-09-23 ok
stocks.6ix.com 5 2026-05-22 2026-09-22 ok
polls.6ix.com 5 2026-04-30 2026-09-03 ok
videos.6ix.com 5 2026-05-15 2026-09-15 ok
connect.6ix.com 5 2026-04-25 2026-08-28 ok
content.6ix.com 6 2026-04-12 2026-08-26 ok
meeting-6ix-com-backend-dev.6ix.com 5 2026-05-10 2026-09-11 ok
meetings-dev.6ix.com 5 2026-05-11 2026-09-12 ok
matrix.6ix.com 6 2026-05-30 2026-10-02 ok

Programmatic access, with DNS A records: API GET /v1/hosts/6ix.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/6ix.com.