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 · 354 ms

HostCertsFirst seenLast seenDNS
avafin.mx 25 2026-04-18 2026-09-29 ok
*.avafin.mx 17 2026-04-18 2026-08-14 —
media.avafin.mx 5 2026-09-29 2026-09-29 ok
c.avafin.mx 5 2026-05-07 2026-09-22 ok
proxy.staging.avafin.mx 15 2026-05-01 2026-10-02 ok
web.proxy.staging.avafin.mx 10 2026-04-17 2026-08-13 ok
click.avafin.mx 5 2026-05-14 2026-09-12 ok
l.avafin.mx 10 2026-05-09 2026-09-16 ok
portal.avafin.mx 23 2026-04-15 2026-09-22 ok
staging.portal.avafin.mx 15 2026-04-17 2026-09-17 ok
app.avafin.mx 10 2026-05-19 2026-09-14 ok
mails.avafin.mx 5 2026-05-16 2026-09-13 ok
preview.avafin.mx 12 2026-09-29 2026-09-29 ok
*.preview.avafin.mx 6 2026-09-29 2026-09-29 —
media.preview.avafin.mx 7 2026-09-29 2026-09-29 ok
www.avafin.mx 2 2026-09-25 2026-09-25 ok
media.www.avafin.mx 5 2026-09-29 2026-09-29 ok
proxy.avafin.mx 40 2026-04-24 2026-09-24 ok
*.proxy.avafin.mx 18 2026-04-24 2026-09-24 —

Programmatic access, with DNS A records: API GET /v1/hosts/avafin.mx (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/avafin.mx.