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 · 849 ms

HostCertsFirst seenLast seenDNS
porter.in 15 2025-07-29 2026-08-24 ok
*.porter.in 15 2025-07-29 2026-08-24 —
*.data.porter.in 1 2025-09-01 2025-09-01 —
cc.porter.in 1 2026-05-15 2026-05-15 ok
www.cc.porter.in 1 2026-05-15 2026-05-15 nxdomain
outbound.porter.in 1 2026-06-08 2026-06-08 ok
www.outbound.porter.in 1 2026-06-08 2026-06-08 nxdomain
staging.porter.in 1 2026-06-26 2026-06-26 nodata
*.staging.porter.in 1 2026-06-26 2026-06-26 —
blog.porter.in 3 2026-05-12 2026-09-13 ok
www.blog.porter.in 3 2026-05-12 2026-09-13 ok
helpdesk.porter.in 13 2026-05-27 2026-09-22 ok
prod-internal.porter.in 3 2026-05-07 2026-08-27 nodata
*.prod-internal.porter.in 10 2026-05-07 2026-09-22 —
staging-internal.porter.in 4 2026-04-29 2026-08-17 nodata
*.staging-internal.porter.in 11 2026-04-19 2026-09-27 —
wildfox-x9k3m7q2.staging-internal.porter.in 2 2026-07-28 2026-07-28 nodata
cc-lead-mgmt.staging-internal.porter.in 3 2026-05-29 2026-08-27 nodata
*.internal.porter.in 2 2025-06-24 2026-05-25 —
staging.internal.porter.in 1 2026-06-26 2026-06-26 nxdomain
*.staging.internal.porter.in 1 2026-06-26 2026-06-26 —
delivery.mail.porter.in 4 2026-04-20 2026-10-03 ok
delivery.communication.porter.in 5 2026-04-18 2026-09-25 ok
delivery.info.porter.in 6 2026-04-22 2026-10-03 ok
payments.porter.in 1 2026-01-08 2026-01-08 nxdomain
www.payments.porter.in 1 2026-01-08 2026-01-08 nxdomain
spot.porter.in 1 2026-06-08 2026-06-08 ok
www.spot.porter.in 1 2026-06-08 2026-06-08 nxdomain

Programmatic access, with DNS A records: API GET /v1/hosts/porter.in (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/porter.in.