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.

18 hosts · 368 ms

HostCertsFirst seenLast seenDNS
itchotels.com 7 2025-12-03 2026-09-01 ok
ams-stage2.itchotels.com 6 2025-12-03 2026-09-01 ok
ams-stage.itchotels.com 6 2025-12-03 2026-09-01 ok
m.itchotels.com 6 2025-12-03 2026-09-01 ok
swayam.itchotels.com 62 2026-04-10 2026-08-26 ok
welearn.itchotels.com 2 2025-06-19 2026-06-19 ok
www.welearn.itchotels.com 2 2025-06-19 2026-06-19 nxdomain
dev-revamp.itchotels.com 6 2025-12-03 2026-09-01 nxdomain
crmlookup.itchotels.com 1 2026-04-10 2026-04-10 ok
ams-prod-author.itchotels.com 6 2025-12-03 2026-09-01 ok
ams-stage-author.itchotels.com 6 2025-12-03 2026-09-01 ok
res.itchotels.com 27 2026-04-21 2026-10-05 ok
synxis.itchotels.com 1 2026-03-09 2026-03-09 ok
www.synxis.itchotels.com 1 2026-03-09 2026-03-09 nxdomain
inguest.itchotels.com 6 2025-12-03 2026-09-01 ok
stage-inguest.itchotels.com 6 2025-12-03 2026-09-01 ok
dev-inguest.itchotels.com 6 2025-12-03 2026-09-01 nxdomain
www.itchotels.com 6 2025-12-03 2026-09-01 ok

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