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.

28 hosts · 304 ms

HostCertsFirst seenLast seenDNS
onepay.com 19 2026-04-30 2026-09-14 ok
*.onepay.com 14 2026-04-30 2026-09-14 —
game1.onepay.com 5 2026-05-25 2026-09-22 ok
url3092.onepay.com 3 2026-06-06 2026-08-21 ok
ablink.update.onepay.com 3 2026-06-06 2026-08-21 ok
cozy-mousse-staging.onepay.com 5 2026-05-16 2026-09-13 ok
datahooks-staging.onepay.com 8 2026-04-26 2026-08-22 ok
email.research.onepay.com 4 2026-04-14 2026-08-12 ok
link.onepay.com 2 2026-09-10 2026-09-10 ok
stage-link.onepay.com 2 2026-09-09 2026-09-09 ok
exp-stage-link.onepay.com 2 2026-09-09 2026-09-09 ok
exp-link.onepay.com 2 2026-09-09 2026-09-09 ok
dev-link.onepay.com 2 2026-09-09 2026-09-09 ok
m.onepay.com 5 2026-06-02 2026-09-30 ok
ablink.info.onepay.com 5 2026-04-26 2026-09-25 ok
hello.onepay.com 3 2026-06-19 2026-09-03 ok
dev-hello.onepay.com 3 2026-06-04 2026-08-19 ok
developer.onepay.com 5 2026-05-21 2026-09-18 ok
datahooks.onepay.com 8 2026-04-26 2026-08-22 ok
mta-sts.onepay.com 5 2026-05-14 2026-09-11 ok
status.onepay.com 4 2026-05-07 2026-07-05 ok
ablink.account.onepay.com 3 2026-06-06 2026-08-21 ok
next.onepay.com 5 2026-06-04 2026-10-02 ok
datahooks-dev.onepay.com 8 2026-04-26 2026-08-22 ok
dev-w.onepay.com 3 2026-06-02 2026-08-17 ok
oaw.onepay.com 6 2026-05-01 2026-08-27 nodata
*.oaw.onepay.com 6 2026-05-01 2026-08-27 —
www.onepay.com 5 2026-05-16 2026-09-13 ok

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