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 · 335 ms

HostCertsFirst seenLast seenDNS
sellerboard.com 13 2025-09-08 2026-10-03 ok
*.sellerboard.com 13 2025-09-08 2026-10-03 —
proxy1c.sellerboard.com 9 2026-05-11 2026-10-04 nxdomain
*.proxy1c.sellerboard.com 9 2026-05-11 2026-10-04 —
d.sellerboard.com 9 2026-05-11 2026-10-04 nxdomain
*.d.sellerboard.com 9 2026-05-11 2026-10-04 —
staging.sellerboard.com 2 2026-07-30 2026-07-30 nxdomain
*.staging.sellerboard.com 2 2026-07-30 2026-07-30 —
keyword-research.sellerboard.com 10 2026-05-09 2026-10-04 ok
*.keyword-research.sellerboard.com 10 2026-05-09 2026-10-04 —
l.sellerboard.com 11 2026-04-27 2026-10-04 nodata
*.l.sellerboard.com 11 2026-04-27 2026-10-04 —
email.l.sellerboard.com 5 2026-05-05 2026-09-02 ok
m.sellerboard.com 10 2026-05-15 2026-10-04 nodata
*.m.sellerboard.com 10 2026-05-15 2026-10-04 —
tiktokshop.sellerboard.com 13 2026-04-30 2026-10-05 nxdomain
*.tiktokshop.sellerboard.com 13 2026-04-30 2026-10-05 —
app.sellerboard.com 12 2026-04-24 2026-10-04 ok
*.app.sellerboard.com 12 2026-04-24 2026-10-04 —
repricer.sellerboard.com 10 2026-05-09 2026-10-04 ok
*.repricer.sellerboard.com 10 2026-05-09 2026-10-04 —
data-miner.sellerboard.com 9 2026-05-19 2026-10-04 nxdomain
*.data-miner.sellerboard.com 9 2026-05-19 2026-10-04 —
wdc.data-miner.sellerboard.com 11 2026-04-16 2026-10-04 ok
*.wdc.data-miner.sellerboard.com 11 2026-04-16 2026-10-04 —
staging.data-miner.sellerboard.com 10 2026-05-28 2026-10-04 ok
*.staging.data-miner.sellerboard.com 10 2026-05-28 2026-10-04 —
dev.data-miner.sellerboard.com 12 2026-04-16 2026-10-04 ok
*.dev.data-miner.sellerboard.com 12 2026-04-16 2026-10-04 —
barcode-scanner.sellerboard.com 10 2026-05-09 2026-10-04 ok
*.barcode-scanner.sellerboard.com 10 2026-05-09 2026-10-04 —
quickbooks.sellerboard.com 10 2026-05-09 2026-10-04 ok
*.quickbooks.sellerboard.com 10 2026-05-09 2026-10-04 —
registry.sellerboard.com 10 2026-05-09 2026-10-04 ok
*.registry.sellerboard.com 10 2026-05-09 2026-10-04 —

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