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 · 298 ms

HostCertsFirst seenLast seenDNS
symplelending.com 14 2026-02-06 2026-09-28 ok
*.symplelending.com 2 2026-02-22 2026-07-10 —
vpn1.symplelending.com 1 2026-02-27 2026-02-27 nxdomain
www.vpn1.symplelending.com 1 2026-02-27 2026-02-27 nxdomain
stape.symplelending.com 2 2026-07-10 2026-07-10 nxdomain
g.symplelending.com 1 2026-09-09 2026-09-09 ok
training.symplelending.com 1 2026-10-06 2026-10-06 nxdomain
blog.symplelending.com 12 2026-04-18 2026-08-14 ok
search.symplelending.com 3 2026-05-23 2026-09-09 ok
book.symplelending.com 1 2026-10-01 2026-10-01 nodata
myportal.symplelending.com 1 2026-10-01 2026-10-01 nodata
myplan.symplelending.com 5 2025-10-28 2026-09-28 ok
vpn.symplelending.com 3 2026-03-31 2026-10-02 ok
*.vpn.symplelending.com 1 2026-10-02 2026-10-02 —
tampa1.vpn.symplelending.com 4 2025-08-26 2026-08-31 ok
irvine1.vpn.symplelending.com 4 2025-08-19 2026-08-31 ok
tampa2.vpn.symplelending.com 4 2025-08-26 2026-08-31 nxdomain
irvine2.vpn.symplelending.com 4 2025-08-19 2026-08-31 ok
tampa.vpn.symplelending.com 4 2025-08-26 2026-08-31 ok
irvine.vpn.symplelending.com 4 2025-08-19 2026-08-31 ok
app.symplelending.com 1 2026-10-01 2026-10-01 nodata
partner.symplelending.com 1 2026-10-01 2026-10-01 nodata
developer.symplelending.com 8 2026-04-25 2026-08-21 ok
s.symplelending.com 5 2026-05-24 2026-09-21 ok
load.s.symplelending.com 13 2026-05-23 2026-09-19 ok
offers.symplelending.com 2 2026-04-14 2026-09-14 ok
success.symplelending.com 1 2026-10-01 2026-10-01 nodata
mta-sts.symplelending.com 5 2026-05-30 2026-09-27 ok
status.symplelending.com 5 2026-05-19 2026-09-16 ok
support.symplelending.com 8 2026-04-23 2026-08-19 ok
sst.symplelending.com 3 2026-07-10 2026-09-08 ok
trust.symplelending.com 10 2026-05-25 2026-09-21 ok
www.symplelending.com 10 2026-05-16 2026-09-11 ok
apply.symplelending.com 2 2025-09-15 2026-10-03 ok
riseuniversity.symplelending.com 1 2025-12-29 2025-12-29 nxdomain

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