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.

15 hosts · 354 ms

HostCertsFirst seenLast seen
sayweee.com 6 2025-07-14 2026-10-08
*.sayweee.com 8 2025-07-14 2026-10-08
*.lab.sayweee.com 2 2026-06-23 2026-06-23
performance.sayweee.com 9 2026-05-29 2026-09-25
dimg.sayweee.com 12 2026-06-12 2026-10-08
email-tracking.sayweee.com 4 2026-04-18 2026-08-16
www.blog.sayweee.com 4 2026-06-09 2026-09-22
search.sayweee.com 10 2026-05-06 2026-09-02
click.sayweee.com 6 2026-06-12 2026-08-10
go.sayweee.com 20 2026-05-04 2026-08-30
ads.sayweee.com 8 2026-05-29 2026-09-24
campaigns.sayweee.com 12 2026-06-01 2026-09-27
privacy.sayweee.com 7 2026-03-10 2026-09-29
weeeprivacy.sayweee.com 2 2026-03-18 2026-03-24
skuwiz.sayweee.com 14 2026-06-03 2026-09-30

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