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.

41 hosts · 328 ms

HostCertsFirst seenLast seenDNS
hear.com 16 2025-08-17 2026-09-17 ok
*.hear.com 19 2025-08-17 2026-09-17 —
payments-ca.hear.com 5 2026-05-14 2026-09-11 ok
l.za.hear.com 6 2026-05-08 2026-09-03 ok
page.hear.com 10 2026-05-22 2026-09-17 ok
in.store.hear.com 15 2026-06-07 2026-10-05 ok
*.shared-staging.hear.com 7 2025-08-17 2026-09-15 —
*.cdn.shared-staging.hear.com 3 2025-08-17 2026-08-03 —
customer.shared-staging.hear.com 1 2026-01-21 2026-01-21 ok
careers.shared-staging.hear.com 2 2025-10-28 2026-09-27 ok
*.careers.shared-staging.hear.com 2 2025-10-28 2026-09-27 —
payments.shared-staging.hear.com 5 2026-05-07 2026-09-04 ok
shared-testing.hear.com 6 2025-06-16 2026-08-31 ok
*.shared-testing.hear.com 14 2025-06-16 2026-09-15 —
payments-ca.shared-testing.hear.com 5 2026-05-21 2026-09-18 ok
cdn.shared-testing.hear.com 1 2025-06-16 2025-06-16 nxdomain
*.cdn.shared-testing.hear.com 4 2025-06-16 2026-08-03 —
customer.shared-testing.hear.com 1 2026-01-21 2026-01-21 ok
*.kr.shared-testing.hear.com 1 2025-06-16 2025-06-16 —
careers.shared-testing.hear.com 2 2025-10-28 2026-09-27 ok
*.careers.shared-testing.hear.com 2 2025-10-28 2026-09-27 —
payments.shared-testing.hear.com 5 2026-05-21 2026-09-18 ok
tech.hear.com 5 2026-05-04 2026-09-01 ok
portal.hear.com 11 2026-04-13 2026-08-23 ok
ivmwbl.hear.com 3 2026-05-15 2026-09-30 ok
*.cdn.hear.com 10 2025-08-17 2026-08-03 —
shared-production.hear.com 1 2026-01-12 2026-01-12 nodata
*.shared-production.hear.com 4 2025-08-18 2026-07-17 —
*.cdn.shared-production.hear.com 4 2025-08-18 2026-07-17 —
go.hear.com 5 2026-06-01 2026-09-27 ok
tap.hear.com 5 2026-06-03 2026-10-02 ok
app.hear.com 3 2026-06-01 2026-08-16 ok
customer.hear.com 1 2026-01-21 2026-01-21 ok
pages.hear.com 10 2026-04-13 2026-08-09 ok
clicks.hear.com 2 2025-08-03 2026-07-04 ok
sms.hear.com 5 2026-05-11 2026-09-08 ok
careers.hear.com 2 2025-10-28 2026-09-27 ok
*.careers.hear.com 2 2025-10-28 2026-09-27 —
investors.hear.com 20 2026-04-22 2026-09-11 ok
payments.hear.com 5 2026-05-14 2026-09-11 ok
direct.hear.com 12 2026-04-15 2026-09-26 ok

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