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.

17 hosts · 287 ms

HostCertsFirst seenLast seenDNS
alamobowl.com 6 2026-02-21 2026-09-19 ok
rc.alamobowl.com 5 2026-05-01 2026-08-29 ok
nextcloud.alamobowl.com 4 2026-04-10 2026-08-09 ok
bimi.alamobowl.com 1 2026-08-10 2026-08-10 ok
click.info.alamobowl.com 3 2026-07-27 2026-09-25 ok
smtp.alamobowl.com 1 2026-08-07 2026-08-07 ok
mailserverbackup.alamobowl.com 4 2026-04-15 2026-08-14 ok
autodiscover.alamobowl.com 4 2026-04-10 2026-08-09 ok
mailserver.alamobowl.com 4 2026-04-10 2026-08-09 ok
sr.alamobowl.com 5 2026-04-23 2026-08-22 ok
experiences.alamobowl.com 5 2026-01-13 2026-06-17 ok
mta-sts.alamobowl.com 3 2026-07-31 2026-09-29 ok
lists.alamobowl.com 3 2026-07-23 2026-09-22 ok
bw.alamobowl.com 4 2026-04-10 2026-08-09 ok
pw.alamobowl.com 5 2026-05-26 2026-09-21 ok
vw.alamobowl.com 5 2026-05-01 2026-08-30 ok
www.alamobowl.com 6 2026-02-21 2026-09-19 ok

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