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.

31 hosts · 259 ms

HostCertsFirst seenLast seen
borderlessaccess.com 8 2026-05-01 2026-08-29
*.borderlessaccess.com 5 2026-05-01 2026-08-29
beta2.borderlessaccess.com 2 2026-02-23 2026-06-19
www.beta2.borderlessaccess.com 2 2026-02-24 2026-06-19
aoc.borderlessaccess.com 6 2026-06-02 2026-10-03
beta-aoc.borderlessaccess.com 6 2026-04-14 2026-10-03
dashboard.borderlessaccess.com 5 2026-05-26 2026-09-22
redmine.borderlessaccess.com 2 2025-07-10 2026-07-05
blog.borderlessaccess.com 12 2026-04-22 2026-08-19
smartech.borderlessaccess.com 6 2026-04-22 2026-08-18
ci.borderlessaccess.com 5 2026-04-12 2026-10-04
beta-ci.borderlessaccess.com 6 2026-04-14 2026-10-03
aoc-api.borderlessaccess.com 6 2026-04-12 2026-10-04
exchange-api.borderlessaccess.com 6 2026-05-29 2026-09-28
sandbox-exchange-api.borderlessaccess.com 5 2026-05-26 2026-09-24
ci-api.borderlessaccess.com 6 2026-04-14 2026-10-04
forum-api.borderlessaccess.com 5 2026-05-22 2026-09-18
rfp-api.borderlessaccess.com 3 2026-07-27 2026-09-24
partner-api.borderlessaccess.com 12 2026-04-12 2026-09-18
sandbox-partner-api.borderlessaccess.com 12 2026-04-12 2026-09-17
rate-limiter-api.borderlessaccess.com 5 2026-07-19 2026-09-17
pms-api.borderlessaccess.com 4 2026-02-20 2026-10-05
smartsight-api.borderlessaccess.com 5 2026-05-23 2026-09-21
internal.borderlessaccess.com 5 2026-04-14 2026-09-01
forum.borderlessaccess.com 5 2026-05-23 2026-09-20
sp.borderlessaccess.com 10 2026-04-22 2026-09-19
misreports.borderlessaccess.com 1 2025-12-24 2025-12-24
surveys.borderlessaccess.com 5 2026-05-19 2026-09-17
connect.borderlessaccess.com 7 2026-04-23 2026-08-25
smartsight.borderlessaccess.com 5 2026-05-23 2026-09-19
www.borderlessaccess.com 3 2026-06-10 2026-08-09

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