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 · 293 ms

HostCertsFirst seenLast seenDNS
grancursosonline.com.br 38 2025-10-20 2026-10-02 ok
*.grancursosonline.com.br 39 2025-10-20 2026-10-02 —
*.devops2.grancursosonline.com.br 2 2026-04-22 2026-04-22 —
*.infra.grancursosonline.com.br 21 2025-07-13 2026-10-01 —
infra-shared.grancursosonline.com.br 2 2026-02-24 2026-07-12 nodata
*.infra-shared.grancursosonline.com.br 2 2026-02-24 2026-07-12 —
comunidade.grancursosonline.com.br 5 2026-05-22 2026-09-19 ok
azure.grancursosonline.com.br 9 2026-05-23 2026-09-19 nxdomain
cloud.sf.grancursosonline.com.br 2 2025-09-22 2026-09-11 ok
image.sf.grancursosonline.com.br 3 2025-11-05 2026-02-02 ok
click.sf.grancursosonline.com.br 3 2025-09-23 2026-09-17 ok
view.sf.grancursosonline.com.br 3 2025-09-27 2026-09-14 ok
fbapi.grancursosonline.com.br 4 2026-04-22 2026-09-30 ok
*.internal.grancursosonline.com.br 30 2025-08-05 2026-10-05 —
graduacao.grancursosonline.com.br 10 2026-05-24 2026-08-06 ok
posgraduacao.grancursosonline.com.br 7 2026-05-24 2026-09-06 ok
promo.grancursosonline.com.br 10 2026-05-04 2026-08-30 ok
*.novo.grancursosonline.com.br 2 2025-09-02 2026-08-03 —
avaliacoes.grancursosonline.com.br 14 2026-05-01 2026-09-26 ok
*.infra-questoes.grancursosonline.com.br 1 2026-01-30 2026-01-30 —
auth.questoes.grancursosonline.com.br 4 2026-05-29 2026-09-23 ok
imparaveis.grancursosonline.com.br 2 2026-08-12 2026-08-12 ok
*.sigeco-devops.grancursosonline.com.br 16 2026-04-22 2026-04-27 —
*.devops.grancursosonline.com.br 2 2026-04-22 2026-04-22 —
avaliacoes-dev.grancursosonline.com.br 8 2026-05-01 2026-09-29 ok
www.grancursosonline.com.br 1 2025-10-20 2025-10-20 ok

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