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 · 294 ms

HostCertsFirst seenLast seenDNS
utp.edu.pe 9 2025-07-02 2026-07-13 ok
*.utp.edu.pe 3 2025-07-02 2026-07-01 —
vpn2.utp.edu.pe 1 2026-05-06 2026-05-06 ok
mesadeayuda.utp.edu.pe 10 2026-05-28 2026-09-25 ok
empleabilidad.utp.edu.pe 5 2026-05-05 2026-09-04 ok
mail.empleabilidad.utp.edu.pe 5 2026-05-05 2026-09-04 ok
www.empleabilidad.utp.edu.pe 5 2026-05-05 2026-09-04 ok
pepe.utp.edu.pe 8 2026-06-17 2026-09-23 ok
vpn.utp.edu.pe 7 2025-09-04 2026-07-08 ok
www.vpn.utp.edu.pe 6 2025-09-04 2026-07-08 nxdomain
go.utp.edu.pe 13 2026-06-04 2026-09-30 ok
bancos.utp.edu.pe 1 2026-03-02 2026-03-02 nodata
learningbadgets.utp.edu.pe 3 2026-06-19 2026-08-18 ok
mta-sts.utp.edu.pe 3 2026-04-30 2026-09-20 ok
status.utp.edu.pe 5 2026-05-20 2026-09-22 ok
www.status.utp.edu.pe 5 2026-04-23 2026-08-24 ok
bancoscot.utp.edu.pe 4 2026-07-09 2026-07-13 nodata
bancosdev.utp.edu.pe 1 2026-03-02 2026-03-02 nodata
www.utp.edu.pe 6 2026-03-02 2026-07-13 ok

Programmatic access, with DNS A records: API GET /v1/hosts/utp.edu.pe (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/utp.edu.pe.