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.

69 hosts · 172 ms

HostCertsFirst seenLast seen
splitit.com 9 2025-10-08 2026-08-28
*.splitit.com 8 2025-09-24 2026-08-25
*.dev1.splitit.com 3 2025-09-17 2026-08-18
*.dev2.splitit.com 3 2025-09-17 2026-08-18
*.dev3.splitit.com 3 2025-09-17 2026-08-18
*.dev4.splitit.com 3 2025-09-17 2026-08-18
*.da.splitit.com 3 2025-09-17 2026-08-18
beta.splitit.com 1 2025-10-08 2025-10-08
*.beta.splitit.com 9 2025-09-24 2026-08-25
*.db.splitit.com 3 2025-09-17 2026-08-18
*.dev-pub.splitit.com 3 2026-04-16 2026-09-16
*.dc.splitit.com 3 2025-09-17 2026-08-18
*.svc.splitit.com 2 2025-08-30 2026-07-31
*.dd.splitit.com 3 2025-09-17 2026-08-18
sp-bounce.splitit.com 5 2026-05-10 2026-09-08
*.de.splitit.com 3 2025-09-17 2026-08-18
*.df.splitit.com 3 2025-09-17 2026-08-18
*.dg.splitit.com 3 2025-09-17 2026-08-18
staging.splitit.com 5 2025-10-08 2026-07-23
*.staging.splitit.com 8 2025-10-08 2026-08-25
marketing.splitit.com 12 2026-05-09 2026-09-05
samsung.splitit.com 8 2026-04-19 2026-08-15
swp-syslog.splitit.com 3 2026-07-05 2026-09-03
*.dh.splitit.com 3 2025-09-17 2026-08-18
*.di.splitit.com 3 2025-09-17 2026-08-18
*.dj.splitit.com 3 2025-09-17 2026-08-18
sp-track.splitit.com 5 2026-04-26 2026-08-25
*.dk.splitit.com 3 2025-09-17 2026-08-18
*.beta-local.splitit.com 6 2025-09-24 2026-08-25
*.staging-local.splitit.com 2 2026-02-19 2026-07-07
*.production-local.splitit.com 6 2025-09-24 2026-08-25
*.production-dr-local.splitit.com 4 2025-09-24 2026-08-25
*.sandbox-dr-local.splitit.com 6 2025-09-24 2026-08-25
*.sandbox-local.splitit.com 8 2025-09-24 2026-08-25
social.splitit.com 5 2026-05-01 2026-09-16
*.dl.splitit.com 3 2025-09-17 2026-08-18
*.dm.splitit.com 3 2025-09-17 2026-08-18
*.dn.splitit.com 3 2025-09-17 2026-08-18
production.splitit.com 5 2025-09-24 2026-08-25
*.production.splitit.com 8 2025-09-24 2026-08-25
*.do.splitit.com 3 2025-09-17 2026-08-18
video.splitit.com 3 2026-05-28 2026-09-11
*.dp.splitit.com 3 2025-09-17 2026-08-18
*.dq.splitit.com 3 2025-09-17 2026-08-18
production-dr.splitit.com 1 2025-10-08 2025-10-08
*.production-dr.splitit.com 6 2025-09-24 2026-08-25
sandbox-dr.splitit.com 1 2025-10-08 2025-10-08
*.sandbox-dr.splitit.com 8 2025-09-24 2026-08-25
*.dr.splitit.com 3 2025-09-17 2026-08-18
*.ds.splitit.com 3 2025-09-17 2026-08-18
creditunions.splitit.com 1 2026-09-29 2026-09-29
status.splitit.com 8 2026-04-23 2026-09-04
news.splitit.com 13 2026-05-05 2026-08-31
*.dt.splitit.com 3 2025-09-17 2026-08-18
support.splitit.com 5 2026-05-02 2026-08-30
it-support.splitit.com 6 2026-05-07 2026-09-02
thrivepay-support.splitit.com 5 2026-05-02 2026-08-30
trust.splitit.com 10 2026-05-06 2026-09-01
*.du.splitit.com 3 2025-09-17 2026-08-18
*.dv.splitit.com 3 2025-09-17 2026-08-18
dev.splitit.com 3 2025-09-17 2026-08-18
*.dev.splitit.com 3 2025-09-17 2026-08-18
*.dw.splitit.com 3 2025-09-17 2026-08-18
www.splitit.com 6 2026-05-02 2026-08-28
*.dx.splitit.com 3 2025-09-17 2026-08-18
sandbox.splitit.com 7 2025-09-24 2026-08-25
*.sandbox.splitit.com 10 2025-09-24 2026-08-25
*.dy.splitit.com 3 2025-09-17 2026-08-18
*.dz.splitit.com 3 2025-09-17 2026-08-18

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