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.

15 hosts · 343 ms

HostCertsFirst seenLast seenDNS
gfshomeloans.com 18 2025-11-23 2026-10-05 ok
*.gfshomeloans.com 18 2025-11-23 2026-10-05 —
email.send1.gfshomeloans.com 5 2026-05-13 2026-09-10 ok
email.refi.gfshomeloans.com 5 2026-05-20 2026-09-17 ok
mta-sts.refi.gfshomeloans.com 3 2026-05-20 2026-08-11 ok
bimi.gfshomeloans.com 2 2026-05-08 2026-05-08 nxdomain
email.mail.gfshomeloans.com 5 2026-05-23 2026-09-20 ok
mta-sts.mail.gfshomeloans.com 3 2026-05-23 2026-08-14 ok
mta-sts.em.gfshomeloans.com 3 2026-06-19 2026-09-10 ok
docs.gfshomeloans.com 8 2026-05-03 2026-08-29 ok
email.offers.gfshomeloans.com 5 2026-05-20 2026-09-17 ok
mta-sts.offers.gfshomeloans.com 3 2026-05-20 2026-08-11 ok
mta-sts.gfshomeloans.com 4 2026-04-21 2026-10-04 ok
bucket.gfshomeloans.com 6 2026-05-05 2026-08-31 ok
trust.gfshomeloans.com 10 2026-05-15 2026-09-10 ok

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