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.

24 hosts · 277 ms

HostCertsFirst seenLast seenDNS
synergywholesale.com 28 2026-04-30 2026-09-16 ok
*.synergywholesale.com 5 2026-05-10 2026-09-16 —
interface2.synergywholesale.com 7 2026-04-23 2026-09-28 ok
static.synergywholesale.com 26 2026-04-19 2026-09-18 ok
*.static.synergywholesale.com 22 2026-05-14 2026-09-18 —
interface.synergywholesale.com 34 2026-04-17 2026-09-28 ok
manage.synergywholesale.com 10 2026-05-16 2026-09-18 ok
*.manage.synergywholesale.com 5 2026-05-16 2026-09-03 —
whg.synergywholesale.com 5 2026-06-03 2026-09-21 nodata
*.whg.synergywholesale.com 5 2026-06-03 2026-09-21 —
interface.whg.synergywholesale.com 7 2026-05-26 2026-09-27 ok
manage.whg.synergywholesale.com 5 2026-04-15 2026-09-27 ok
api.synergywholesale.com 21 2026-05-14 2026-09-17 ok
helpdesk.synergywholesale.com 22 2026-05-14 2026-09-15 ok
*.helpdesk.synergywholesale.com 4 2026-05-14 2026-07-08 —
redirection.synergywholesale.com 8 2026-04-27 2026-09-18 ok
*.redirection.synergywholesale.com 5 2026-05-31 2026-09-18 —
api.redirection.synergywholesale.com 4 2026-04-16 2026-08-14 ok
rdap.synergywholesale.com 5 2026-05-03 2026-09-02 ok
api.corp.synergywholesale.com 5 2026-05-15 2026-09-14 ok
whois.synergywholesale.com 6 2026-05-05 2026-09-04 ok
status.synergywholesale.com 4 2026-06-09 2026-10-07 ok
dev.synergywholesale.com 4 2026-04-30 2026-06-29 ok
www.synergywholesale.com 5 2026-04-29 2026-08-26 ok

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