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.

27 hosts · 246 ms

HostCertsFirst seenLast seenDNS
virtuoso.com 2 2026-01-06 2026-01-07 ok
*.virtuoso.com 2 2026-01-06 2026-01-07 —
e-hsb2b.virtuoso.com 20 2026-04-24 2026-08-20 ok
securesync.virtuoso.com 10 2026-04-28 2026-09-26 ok
apim-loc.virtuoso.com 3 2026-01-15 2026-07-09 ok
api-pre.virtuoso.com 3 2026-02-07 2026-08-10 ok
exhibitor.live.virtuoso.com 5 2026-04-25 2026-08-23 ok
connect.live.virtuoso.com 5 2026-04-25 2026-08-23 ok
hsb2b-landing.virtuoso.com 11 2026-06-01 2026-09-28 ok
hsb2c-landing.virtuoso.com 10 2026-05-09 2026-09-05 ok
api.virtuoso.com 2 2026-02-08 2026-08-09 ok
vms.api.virtuoso.com 1 2026-05-27 2026-05-27 ok
link.virtuoso.com 5 2026-06-05 2026-10-03 ok
internal.virtuoso.com 2 2026-01-06 2026-01-07 nodata
*.internal.virtuoso.com 2 2026-01-06 2026-01-07 —
e-email.virtuoso.com 8 2026-05-08 2026-09-03 ok
info.virtuoso.com 8 2026-04-19 2026-08-15 ok
wanderlist-pro.virtuoso.com 4 2026-02-06 2026-09-21 ok
resources.virtuoso.com 2 2026-04-01 2026-09-01 ok
communities.virtuoso.com 18 2026-04-27 2026-09-29 ok
links.virtuoso.com 3 2026-05-22 2026-08-06 ok
status.virtuoso.com 5 2026-05-01 2026-09-02 ok
content.virtuoso.com 9 2026-05-24 2026-09-20 ok
em.wanderlist.virtuoso.com 1 2026-05-27 2026-05-27 ok
api-dev.virtuoso.com 1 2026-02-22 2026-02-22 ok
emw.virtuoso.com 7 2026-06-01 2026-09-27 ok
communities-sandbox.virtuoso.com 12 2026-04-26 2026-09-25 ok

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