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 · 349 ms

HostCertsFirst seenLast seenDNS
kommo.com 6 2025-08-02 2026-08-18 ok
*.kommo.com 6 2025-08-02 2026-08-18 —
teststand3-cf.kommo.com 14 2026-04-09 2026-10-04 ok
teststand4-cf.kommo.com 13 2026-04-09 2026-10-03 ok
teststand5-cf.kommo.com 15 2026-04-08 2026-10-02 ok
teststand6-cf.kommo.com 13 2026-04-09 2026-10-03 ok
scheduling.kommo.com 3 2026-10-01 2026-10-01 ok
testcloudflarecdn.kommo.com 8 2026-04-11 2026-08-07 ok
cfcdn.kommo.com 12 2026-05-10 2026-09-06 ok
pcfcdn.kommo.com 8 2026-04-13 2026-08-09 ok
wcfcdn.kommo.com 10 2026-05-15 2026-09-11 ok
idn.kommo.com 6 2026-05-04 2026-10-02 ok
en.kommo.com 6 2026-05-04 2026-10-02 ok
button.kommo.com 10 2026-05-09 2026-09-05 ok
gso.kommo.com 10 2026-04-17 2026-08-14 ok
ar.kommo.com 16 2026-04-23 2026-08-19 ok
br.kommo.com 6 2026-05-04 2026-10-02 ok
tr.kommo.com 5 2026-04-25 2026-09-23 ok
gtmanalytics.kommo.com 3 2026-04-25 2026-08-15 ok
es.kommo.com 6 2026-05-04 2026-10-02 ok
partners.kommo.com 14 2026-05-25 2026-09-21 ok
developers.kommo.com 11 2026-06-03 2026-09-29 ok
es-developers.kommo.com 9 2026-05-29 2026-09-25 ok
pt-developers.kommo.com 10 2026-05-29 2026-09-24 ok
pt.kommo.com 5 2026-04-25 2026-09-23 ok
support.kommo.com 2 2026-08-17 2026-08-17 ok
testsupport.kommo.com 2 2026-07-21 2026-07-21 ok
www.kommo.com 12 2026-04-26 2026-08-23 ok

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