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.

19 hosts · 326 ms

HostCertsFirst seenLast seenDNS
acerto.com.br 3 2025-08-20 2026-02-13 ok
*.acerto.com.br 10 2025-08-20 2026-08-17 —
negocia.acerto.com.br 10 2026-05-18 2026-09-13 ok
privacidade.acerto.com.br 7 2026-05-28 2026-09-25 ok
cloud.equipe.acerto.com.br 2 2026-01-25 2026-01-26 ok
image.equipe.acerto.com.br 3 2026-01-28 2026-02-07 ok
click.equipe.acerto.com.br 2 2026-01-25 2026-01-26 ok
view.equipe.acerto.com.br 1 2026-01-25 2026-01-25 ok
suporte.acerto.com.br 7 2026-05-28 2026-09-25 ok
santanderhmg.acerto.com.br 2 2026-06-16 2026-06-24 nodata
www.santanderhmg.acerto.com.br 1 2026-06-24 2026-06-24 nxdomain
tracking.acerto.com.br 1 2025-10-01 2025-10-01 ok
www.tracking.acerto.com.br 1 2025-10-01 2025-10-01 nxdomain
dengage-tagueamento.acerto.com.br 2 2026-02-13 2026-02-13 nodata
*.dengage-tagueamento.acerto.com.br 2 2026-02-13 2026-02-13 —
dev-tagueamento.dengage-tagueamento.acerto.com.br 3 2026-05-11 2026-08-28 ok
email.negociar.acerto.com.br 4 2026-04-17 2026-08-15 ok
santander.acerto.com.br 1 2026-06-22 2026-06-22 nodata
www.santander.acerto.com.br 1 2026-06-22 2026-06-22 nxdomain

Programmatic access, with DNS A records: API GET /v1/hosts/acerto.com.br (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/acerto.com.br.