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.

21 hosts · 265 ms

HostCertsFirst seenLast seen
buffaloexchange.com 22 2026-05-14 2026-10-07
*.buffaloexchange.com 17 2026-06-07 2026-10-07
upk0pea.buffaloexchange.com 2 2026-04-25 2026-04-25
rebuild.buffaloexchange.com 2 2026-05-19 2026-05-19
staging.buffaloexchange.com 4 2026-05-05 2026-10-03
webmail.buffaloexchange.com 2 2026-05-14 2026-05-14
sellbymail.buffaloexchange.com 2 2026-05-09 2026-05-09
jobs.buffaloexchange.com 3 2026-06-23 2026-08-22
giftcards.buffaloexchange.com 10 2026-04-16 2026-08-13
airborn.giftcards.buffaloexchange.com 10 2026-04-19 2026-08-16
augupdates.buffaloexchange.com 2 2026-05-20 2026-05-20
septupdates.buffaloexchange.com 2 2026-05-02 2026-05-02
assets.buffaloexchange.com 8 2026-04-18 2026-08-23
12357audit.buffaloexchange.com 2 2026-05-24 2026-05-24
plugintest.buffaloexchange.com 3 2026-07-14 2026-09-12
devtest.buffaloexchange.com 1 2026-04-17 2026-04-17
host.buffaloexchange.com 8 2026-04-15 2026-08-14
www.buffaloexchange.com 5 2026-05-14 2026-08-22
sandbox.buffaloexchange.com 3 2026-04-20 2026-06-19
map-sandbox.buffaloexchange.com 2 2026-06-02 2026-06-02
temporary.buffaloexchange.com 3 2026-04-15 2026-06-14

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