Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

17 hosts · 230 ms

HostCertsFirst seenLast seen
awardwallet.com 2 2025-06-12 2026-02-04
*.awardwallet.com 1 2026-02-04 2026-02-04
ra.awardwallet.com 1 2026-01-16 2026-01-16
ra-hotels-private.infra.awardwallet.com 1 2026-09-29 2026-09-29
ra-flights-private.infra.awardwallet.com 2 2026-09-29 2026-09-29
ra-private.loyalty.infra.awardwallet.com 1 2026-09-28 2026-09-28
web-private.loyalty.infra.awardwallet.com 3 2026-09-25 2026-09-28
ra-hotel-private.loyalty.infra.awardwallet.com 1 2026-09-28 2026-09-28
cdn-blue.awardwallet.com 2 2026-07-02 2026-07-02
us-cc-api.awardwallet.com 1 2025-11-17 2025-11-17
click.awardwallet.com 4 2026-04-18 2026-08-16
link.awardwallet.com 4 2026-04-16 2026-08-13
customer.awardwallet.com 4 2026-06-02 2026-09-18
ra-hotels.awardwallet.com 2 2026-04-25 2026-09-25
ra-flights.awardwallet.com 2 2026-03-25 2026-08-25
customer-test.awardwallet.com 2 2026-07-02 2026-08-28
email-eu.awardwallet.com 1 2026-02-05 2026-02-05

Programmatic access: API GET /v1/hosts/awardwallet.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/awardwallet.com.