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.

20 hosts · 365 ms

HostCertsFirst seenLast seenDNS
onlineprinters.info 25 2026-02-24 2026-10-04 nodata
*.onlineprinters.info 25 2026-02-24 2026-10-04 —
geofeed.onlineprinters.info 6 2026-04-14 2026-08-11 ok
op-artwork-manager-backend.onlineprinters.info 5 2026-04-26 2026-08-24 ok
sftpshare.onlineprinters.info 5 2026-05-31 2026-09-26 ok
mailing.onlineprinters.info 4 2026-04-12 2026-08-10 ok
auth.onlineprinters.info 10 2026-04-24 2026-08-21 ok
ai.onlineprinters.info 5 2026-04-29 2026-08-27 ok
unifi.onlineprinters.info 5 2026-05-30 2026-09-27 ok
wifi.onlineprinters.info 4 2026-04-12 2026-08-10 ok
bimi.onlineprinters.info 15 2026-04-11 2026-10-05 ok
inopla-crm.onlineprinters.info 2 2026-02-24 2026-06-16 ok
pro.onlineprinters.info 5 2026-05-29 2026-09-26 ok
api.pro.onlineprinters.info 5 2026-05-29 2026-09-26 ok
amqp.onlineprinters.info 5 2026-05-08 2026-09-05 ok
refer.onlineprinters.info 4 2026-04-12 2026-08-10 ok
partner.onlineprinters.info 5 2026-05-29 2026-09-26 ok
api.partner.onlineprinters.info 4 2026-06-08 2026-10-06 ok
op-customs.onlineprinters.info 5 2026-05-09 2026-09-06 ok
news.onlineprinters.info 4 2026-04-12 2026-08-10 ok

Programmatic access, with DNS A records: API GET /v1/hosts/onlineprinters.info (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/onlineprinters.info.