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.

32 hosts · 334 ms

HostCertsFirst seenLast seenDNS
redfin.com 20 2025-07-31 2026-09-13 ok
*.redfin.com 16 2025-07-31 2026-07-30 —
prod.redfin.com 1 2025-11-13 2025-11-13 ok
*.prod.redfin.com 1 2025-11-13 2025-11-13 —
analytics-apps-mtg.redfin.com 2 2025-07-21 2026-06-25 nxdomain
www.analytics-apps-mtg.redfin.com 2 2025-07-21 2026-06-25 nxdomain
sli.redfin.com 2 2025-10-05 2026-09-05 ok
prod-vpn-east-full.redfin.com 2 2025-07-08 2026-06-08 nxdomain
prod-vpn-west-full.redfin.com 2 2025-09-09 2026-08-10 ok
prod-vmx-vpn-west-full.redfin.com 2 2025-10-22 2025-10-27 ok
www.prod-vmx-vpn-west-full.redfin.com 1 2025-10-27 2025-10-27 nxdomain
ram.redfin.com 5 2026-05-19 2026-09-16 ok
fin.redfin.com 5 2026-05-01 2026-08-29 ok
contractor-help.redfin.com 5 2026-05-01 2026-08-29 ok
*.corp.redfin.com 1 2025-09-04 2025-09-04 —
careers.redfin.com 3 2025-09-28 2026-08-29 ok
www.careers.redfin.com 3 2025-09-28 2026-08-29 nxdomain
investors.redfin.com 1 2025-07-23 2025-07-23 ok
www.investors.redfin.com 1 2025-07-23 2025-07-23 nxdomain
press.redfin.com 1 2025-07-23 2025-07-23 ok
www.press.redfin.com 1 2025-07-23 2025-07-23 nxdomain
partneragents.redfin.com 5 2026-05-13 2026-09-11 ok
fintranet.redfin.com 1 2026-01-16 2026-01-16 ok
api.fintranet.redfin.com 3 2026-01-16 2026-08-30 ok
support.redfin.com 5 2026-05-01 2026-08-29 ok
prod-vpn-east.redfin.com 2 2025-06-18 2026-05-19 ok
prod-vpn-west.redfin.com 1 2025-10-02 2025-10-02 ok
vpn.dev.redfin.com 1 2026-01-01 2026-01-01 ok
www.redfin.com 13 2026-04-22 2026-09-13 ok
university.redfin.com 5 2026-04-15 2026-10-06 ok
franz.redfin.com 1 2025-12-04 2025-12-04 nxdomain
*.franz.redfin.com 1 2025-12-04 2025-12-04 —

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