Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

17 hosts · 240 ms

HostCertsFirst seenLast seen
swyftx.com 31 2026-04-18 2026-10-01
*.swyftx.com 22 2026-04-18 2026-10-01
apic.swyftx.com 12 2026-05-11 2026-09-06
trade.swyftx.com 1 2026-09-28 2026-09-28
api.swyftx.com 2 2025-07-10 2026-06-10
api.internal.swyftx.com 2 2025-07-10 2026-06-10
*.mail.swyftx.com 9 2026-04-18 2026-08-14
*.m.swyftx.com 9 2026-04-18 2026-08-14
edm.swyftx.com 6 2026-06-23 2026-08-21
trade-origin.swyftx.com 2 2026-08-25 2026-08-25
learn.swyftx.com 8 2026-05-05 2026-08-31
metrics.swyftx.com 5 2026-05-03 2026-08-31
forms.swyftx.com 16 2026-04-30 2026-08-26
insideaccess.swyftx.com 11 2026-06-01 2026-09-27
*.t.swyftx.com 9 2026-04-18 2026-08-14
widget.swyftx.com 7 2026-05-20 2026-09-15
www.swyftx.com 8 2026-06-04 2026-08-27

Programmatic access: API GET /v1/hosts/swyftx.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/swyftx.com.