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 · 374 ms

HostCertsFirst seenLast seenDNS
splitero.com 52 2026-05-07 2026-09-26 ok
*.splitero.com 35 2026-05-07 2026-09-26 —
em2370.splitero.com 10 2026-05-13 2026-09-08 ok
url7839.splitero.com 8 2026-05-08 2026-09-03 ok
sync.splitero.com 5 2026-09-12 2026-09-12 nodata
em4011.sync.splitero.com 2 2026-08-05 2026-08-05 nodata
pm-bounces.sync.splitero.com 2 2026-08-05 2026-08-05 ok
get-started.splitero.com 5 2026-05-12 2026-09-13 ok
inbound.splitero.com 10 2026-05-08 2026-09-03 ok
preprod.splitero.com 6 2026-05-08 2026-09-03 ok
stage.splitero.com 17 2026-05-08 2026-09-16 ok
documents-stage.splitero.com 1 2026-04-09 2026-04-09 nodata
get-started.stage.splitero.com 5 2026-05-13 2026-09-14 ok
wholesale.stage.splitero.com 7 2026-05-19 2026-09-19 ok
console.stage.splitero.com 4 2026-06-02 2026-10-04 ok
retail.stage.splitero.com 5 2026-05-24 2026-09-24 ok
files.stage.splitero.com 14 2026-05-07 2026-09-03 ok
wholesale.splitero.com 5 2026-05-20 2026-09-23 ok
console.splitero.com 3 2026-06-03 2026-08-03 ok
sync-staging.splitero.com 2 2026-09-12 2026-09-12 ok
sync.staging.splitero.com 1 2026-09-12 2026-09-12 ok
auth.splitero.com 2 2026-08-27 2026-08-27 ok
uni.splitero.com 12 2026-06-03 2026-09-30 ok
cloud.mail.splitero.com 4 2025-08-19 2026-08-20 ok
image.mail.splitero.com 3 2025-08-27 2026-09-09 ok
click.mail.splitero.com 4 2025-08-19 2026-08-20 ok
view.mail.splitero.com 5 2025-08-19 2026-08-20 ok
retail.splitero.com 4 2026-06-02 2026-10-05 ok
1passscim.splitero.com 5 2026-04-22 2026-08-19 ok
sso.splitero.com 8 2026-05-09 2026-09-11 ok
app.splitero.com 3 2025-06-09 2026-08-19 ok
*.app.splitero.com 2 2025-06-09 2026-05-10 —
staging.app.splitero.com 1 2026-04-28 2026-04-28 ok
*.staging.app.splitero.com 1 2026-04-28 2026-04-28 —
dev.app.splitero.com 1 2026-04-28 2026-04-28 ok
*.dev.app.splitero.com 1 2026-04-28 2026-04-28 —
www.app.splitero.com 1 2026-08-19 2026-08-19 ok
api-docs.splitero.com 5 2026-05-26 2026-09-24 ok
pm-bounces.splitero.com 6 2026-05-13 2026-09-08 ok
files.splitero.com 12 2026-05-08 2026-09-03 ok
documents.splitero.com 1 2026-04-09 2026-04-09 nodata
uni-uat.splitero.com 14 2026-06-03 2026-09-29 ok
development.splitero.com 13 2026-05-07 2026-09-08 ok
get-started.development.splitero.com 5 2026-05-12 2026-09-13 ok
ot.splitero.com 10 2026-05-14 2026-09-10 ok
auth.test.splitero.com 2 2026-08-27 2026-08-27 ok
sst.splitero.com 8 2026-04-28 2026-08-24 ok
checkout.splitero.com 10 2026-04-21 2026-08-17 ok
wholesale.dev.splitero.com 5 2026-05-17 2026-09-21 ok
console.dev.splitero.com 3 2026-06-04 2026-08-04 ok
retail.dev.splitero.com 5 2026-05-24 2026-09-24 ok
files.dev.splitero.com 16 2026-05-07 2026-09-03 ok
www.splitero.com 13 2026-05-08 2026-09-12 ok
my.splitero.com 5 2025-06-09 2026-09-18 ok
*.my.splitero.com 2 2025-06-09 2026-05-10 —
em1304.my.splitero.com 3 2026-07-14 2026-07-14 nodata
preprod.my.splitero.com 1 2026-04-27 2026-04-27 ok
*.preprod.my.splitero.com 1 2026-04-27 2026-04-27 —
pm-bounces.my.splitero.com 2 2026-07-14 2026-07-14 ok
www.my.splitero.com 1 2026-09-09 2026-09-09 ok

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