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.

21 hosts · 343 ms

HostCertsFirst seenLast seenDNS
oberoihotels.com 2 2025-10-23 2026-01-03 ok
*.oberoihotels.com 1 2025-10-23 2025-10-23 —
mail.oberoihotels.com 1 2026-01-03 2026-01-03 ok
cloud.mail.oberoihotels.com 1 2025-12-15 2025-12-15 ok
image.mail.oberoihotels.com 3 2025-10-17 2026-09-07 ok
click.mail.oberoihotels.com 1 2025-12-15 2025-12-15 ok
view.mail.oberoihotels.com 1 2025-12-15 2025-12-15 ok
aws-cm.oberoihotels.com 1 2026-01-03 2026-01-03 ok
cdp.oberoihotels.com 1 2026-01-03 2026-01-03 ok
res.oberoihotels.com 6 2026-01-03 2026-09-29 ok
www.res.oberoihotels.com 4 2026-03-18 2026-09-21 nxdomain
mails.oberoihotels.com 1 2026-01-03 2026-01-03 ok
cloud.mails.oberoihotels.com 2 2026-04-25 2026-09-26 ok
image.mails.oberoihotels.com 3 2026-04-07 2026-09-07 ok
click.mails.oberoihotels.com 2 2026-04-25 2026-09-26 ok
view.mails.oberoihotels.com 2 2026-04-25 2026-09-26 ok
aws.oberoihotels.com 1 2026-01-03 2026-01-03 ok
aws-dev.oberoihotels.com 1 2026-01-03 2026-01-03 nxdomain
www.oberoihotels.com 1 2026-01-03 2026-01-03 ok
seasonofjoy.oberoihotels.com 1 2026-01-03 2026-01-03 ok
onlinedelivery.oberoihotels.com 1 2026-01-03 2026-01-03 ok

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