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.

100 hosts (first page) · 479 ms

HostCertsFirst seenLast seenDNS
ploom.com 58 2026-04-14 2026-09-24 ok
*.ploom.com 20 2026-04-14 2026-09-20 —
staging-2.ploom.com 2 2026-08-25 2026-08-25 ok
res5.ploom.com 16 2026-05-23 2026-09-18 ok
t5.ploom.com 18 2026-05-22 2026-09-17 ok
m6.ploom.com 20 2026-05-23 2026-09-19 ok
res6.ploom.com 16 2026-05-22 2026-09-17 ok
t6.ploom.com 17 2026-05-22 2026-09-17 ok
ma.ploom.com 16 2026-05-26 2026-09-21 ok
www.ma.ploom.com 16 2026-05-26 2026-09-21 ok
trnc.ploom.com 12 2026-05-11 2026-08-27 ok
gcc.trnc.ploom.com 5 2026-05-15 2026-09-12 ok
m6.mail.trnc.ploom.com 6 2026-06-25 2026-08-23 ok
res6.mail.trnc.ploom.com 8 2026-06-25 2026-08-23 ok
t6.mail.trnc.ploom.com 8 2026-06-25 2026-08-23 ok
www.trnc.ploom.com 12 2026-05-11 2026-08-27 ok
device.ploom.com 12 2026-05-06 2026-09-01 ok
de.ploom.com 20 2026-05-27 2026-09-22 ok
order-de.ploom.com 19 2026-06-07 2026-10-04 ok
res5.de.ploom.com 16 2026-05-22 2026-09-17 ok
t5.de.ploom.com 17 2026-05-23 2026-09-18 ok
m6.de.ploom.com 22 2026-05-23 2026-09-19 ok
res6.de.ploom.com 20 2026-05-23 2026-09-19 ok
t6.de.ploom.com 16 2026-05-23 2026-09-19 ok
eva.de.ploom.com 16 2026-05-08 2026-09-04 ok
gcc.de.ploom.com 6 2026-04-17 2026-09-12 ok
res5.service.de.ploom.com 20 2026-05-22 2026-09-18 ok
t5.service.de.ploom.com 14 2026-05-22 2026-09-17 ok
m6.service.de.ploom.com 13 2026-05-22 2026-09-18 ok
res6.service.de.ploom.com 15 2026-05-22 2026-09-17 ok
t6.service.de.ploom.com 17 2026-05-22 2026-09-17 ok
m1.mail.de.ploom.com 12 2026-05-29 2026-09-24 ok
res1.mail.de.ploom.com 20 2026-05-30 2026-09-25 ok
t1.mail.de.ploom.com 16 2026-05-29 2026-09-24 ok
res5.mail.de.ploom.com 18 2026-05-22 2026-09-17 ok
t5.mail.de.ploom.com 14 2026-05-22 2026-09-17 ok
m6.mail.de.ploom.com 20 2026-05-22 2026-09-17 ok
res6.mail.de.ploom.com 15 2026-05-22 2026-09-17 ok
t6.mail.de.ploom.com 22 2026-05-23 2026-09-19 ok
activation.de.ploom.com 16 2026-04-11 2026-10-06 ok
staging.activation.de.ploom.com 16 2026-06-08 2026-10-04 ok
res5.info.de.ploom.com 17 2026-05-22 2026-09-17 ok
t5.info.de.ploom.com 17 2026-05-22 2026-09-17 ok
m6.info.de.ploom.com 20 2026-05-22 2026-09-17 ok
res6.info.de.ploom.com 14 2026-05-22 2026-09-17 ok
t6.info.de.ploom.com 14 2026-05-22 2026-09-17 ok
get.de.ploom.com 19 2026-04-11 2026-10-06 ok
staging.get.de.ploom.com 18 2026-04-10 2026-10-04 ok
metrics.get.de.ploom.com 6 2026-08-07 2026-10-05 ok
www.metrics.get.de.ploom.com 6 2026-08-07 2026-10-05 ok
www.de.ploom.com 20 2026-05-27 2026-09-23 ok
me.ploom.com 16 2026-05-26 2026-09-21 ok
m1.me.ploom.com 12 2026-05-02 2026-08-28 ok
res1.me.ploom.com 14 2026-05-01 2026-08-27 ok
t1.me.ploom.com 20 2026-05-03 2026-08-30 ok
eva.me.ploom.com 10 2026-05-08 2026-09-03 ok
gcc.me.ploom.com 6 2026-04-17 2026-09-12 ok
m1.mail.me.ploom.com 18 2026-05-25 2026-09-20 ok
res1.mail.me.ploom.com 10 2026-05-24 2026-09-19 ok
t1.mail.me.ploom.com 12 2026-05-26 2026-09-21 ok
res5.mail.me.ploom.com 10 2026-05-22 2026-09-17 ok
t5.mail.me.ploom.com 20 2026-05-23 2026-09-19 ok
m6.mail.me.ploom.com 18 2026-05-22 2026-09-17 ok
res6.mail.me.ploom.com 19 2026-05-22 2026-09-17 ok
t6.mail.me.ploom.com 17 2026-05-22 2026-09-17 ok
www.me.ploom.com 16 2026-05-26 2026-09-21 ok
orderme.ploom.com 16 2026-06-07 2026-10-03 ok
staging.ploom.com 4 2026-08-25 2026-08-26 ok
si.ploom.com 12 2026-05-26 2026-09-21 ok
order-si.ploom.com 20 2026-06-07 2026-10-03 ok
res5.si.ploom.com 19 2026-05-23 2026-09-19 ok
t5.si.ploom.com 16 2026-05-22 2026-09-17 ok
m6.si.ploom.com 16 2026-05-22 2026-09-17 ok
res6.si.ploom.com 15 2026-05-22 2026-09-17 ok
t6.si.ploom.com 14 2026-05-22 2026-09-17 ok
m1.ma.si.ploom.com 16 2026-05-22 2026-09-18 ok
res1.ma.si.ploom.com 17 2026-05-22 2026-09-17 ok
t1.ma.si.ploom.com 14 2026-05-21 2026-09-16 ok
res5.ma.si.ploom.com 20 2026-05-22 2026-09-17 ok
t5.ma.si.ploom.com 16 2026-05-22 2026-09-17 ok
m6.ma.si.ploom.com 10 2026-05-22 2026-09-17 ok
res6.ma.si.ploom.com 16 2026-05-23 2026-09-19 ok
t6.ma.si.ploom.com 20 2026-05-23 2026-09-19 ok
eva.si.ploom.com 14 2026-05-08 2026-09-03 ok
gcc.si.ploom.com 6 2026-04-17 2026-09-12 ok
m1.info.si.ploom.com 12 2026-05-21 2026-09-16 ok
res1.info.si.ploom.com 17 2026-05-22 2026-09-18 ok
t1.info.si.ploom.com 13 2026-05-22 2026-09-18 ok
res5.info.si.ploom.com 14 2026-05-22 2026-09-17 ok
t5.info.si.ploom.com 14 2026-05-22 2026-09-17 ok
m6.info.si.ploom.com 20 2026-05-22 2026-09-18 ok
res6.info.si.ploom.com 14 2026-05-22 2026-09-17 ok
t6.info.si.ploom.com 14 2026-05-22 2026-09-17 ok
www.si.ploom.com 14 2026-05-26 2026-09-21 ok
travel.ploom.com 12 2026-05-27 2026-08-23 ok
www.travel.ploom.com 22 2026-05-26 2026-09-11 ok
*.www.travel.ploom.com 2 2026-06-25 2026-06-25 —
m1.mail.ploom.com 14 2026-04-18 2026-08-14 ok
res1.mail.ploom.com 8 2026-04-17 2026-08-13 ok
t1.mail.ploom.com 8 2026-04-19 2026-08-16 ok

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/ploom.com.

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/ploom.com.