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.

35 hosts · 367 ms

HostCertsFirst seenLast seenDNS
fispan.com 31 2026-02-14 2026-09-22 ok
*.fispan.com 22 2026-02-14 2026-09-22 —
static.fispan.com 10 2026-06-02 2026-06-02 nxdomain
secured.fispan.com 6 2026-05-13 2026-07-11 ok
*.secured.fispan.com 6 2026-05-13 2026-07-11 —
marketing.fispan.com 4 2026-04-20 2026-04-20 nxdomain
blog.fispan.com 4 2026-06-04 2026-06-04 nxdomain
mj.fispan.com 4 2026-04-09 2026-08-07 ok
mail.fispan.com 8 2026-04-19 2026-08-10 ok
info.fispan.com 6 2026-04-19 2026-08-10 ok
demo.fispan.com 5 2026-04-24 2026-08-24 ok
forms.fispan.com 13 2026-04-13 2026-09-01 ok
mta-sts.fispan.com 8 2026-06-02 2026-10-01 ok
support.fispan.com 4 2026-06-05 2026-10-03 ok
tdcanada-support.fispan.com 1 2026-09-25 2026-09-25 ok
columbia-support.fispan.com 2 2026-08-12 2026-09-25 ok
cnb-support.fispan.com 5 2026-06-04 2026-09-25 ok
svb-support.fispan.com 5 2026-06-04 2026-09-25 ok
hsbc-support.fispan.com 5 2026-06-04 2026-09-25 ok
firstrepublic-support.fispan.com 5 2026-06-04 2026-09-25 ok
pnc-support.fispan.com 5 2026-06-04 2026-09-25 ok
td-support.fispan.com 5 2026-06-04 2026-09-25 ok
mufg-support.fispan.com 5 2026-06-04 2026-09-25 ok
commercebank-support.fispan.com 5 2026-06-04 2026-09-25 ok
customersbank-support.fispan.com 5 2026-06-04 2026-09-25 ok
keybank-support.fispan.com 5 2026-06-04 2026-09-25 ok
jpmorgan-support.fispan.com 5 2026-06-04 2026-09-25 ok
bmo-support.fispan.com 5 2026-06-04 2026-09-25 ok
santander-support.fispan.com 5 2026-06-04 2026-09-25 ok
goldmansachs-support.fispan.com 5 2026-06-04 2026-09-25 ok
citizens-support.fispan.com 5 2026-06-04 2026-09-25 ok
firstcitizens-support.fispan.com 5 2026-06-04 2026-09-25 ok
podcast.fispan.com 2 2026-04-28 2026-04-28 nxdomain
trust.fispan.com 5 2026-04-21 2026-08-18 ok
www.fispan.com 4 2026-05-04 2026-09-05 ok

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