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.

26 hosts · 350 ms

HostCertsFirst seenLast seenDNS
petsafe.com 1 2025-10-09 2025-10-09 ok
*.petsafe.com 1 2025-10-09 2025-10-09 —
vice01.petsafe.com 1 2025-11-19 2025-11-19 ok
vice02.petsafe.com 1 2025-11-19 2025-11-19 ok
ca.petsafe.com 13 2026-05-17 2026-09-26 ok
gb.petsafe.com 13 2026-05-11 2026-09-20 ok
be.petsafe.com 13 2026-05-13 2026-09-21 ok
de.petsafe.com 17 2026-05-12 2026-09-21 ok
page.petsafe.com 11 2026-05-18 2026-09-14 ok
ie.petsafe.com 16 2026-05-12 2026-09-20 ok
omnistore.petsafe.com 1 2026-09-25 2026-09-25 ok
my-staging.petsafe.com 11 2026-04-14 2026-09-25 ok
ch.petsafe.com 11 2026-05-11 2026-09-22 ok
link.petsafe.com 5 2026-05-02 2026-08-29 servfail
nl.petsafe.com 18 2026-05-12 2026-09-20 ok
my-integration.petsafe.com 14 2026-04-15 2026-09-26 ok
promo.petsafe.com 12 2026-05-15 2026-09-10 ok
cfjump.petsafe.com 4 2026-04-20 2026-08-24 ok
autodiscover.petsafe.com 1 2025-12-01 2025-12-01 ok
fr.petsafe.com 13 2026-05-11 2026-09-20 ok
qr.petsafe.com 10 2026-05-17 2026-09-12 ok
es.petsafe.com 13 2026-05-12 2026-09-21 ok
it.petsafe.com 15 2026-05-12 2026-09-22 ok
au.petsafe.com 13 2026-05-11 2026-09-26 ok
flow.petsafe.com 8 2026-04-11 2026-10-05 ok
my.petsafe.com 13 2026-04-14 2026-09-26 ok

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