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.

49 hosts · 388 ms

HostCertsFirst seenLast seenDNS
swb.de 13 2025-09-16 2026-10-05 ok
*.swb.de 8 2025-09-16 2026-10-05 —
secure3.swb.de 1 2025-08-10 2025-08-10 servfail
kon.secure3.swb.de 1 2025-07-26 2025-07-26 servfail
admin.kon.secure3.swb.de 1 2025-07-26 2025-07-26 servfail
home-id.swb.de 2 2025-09-30 2026-08-31 ok
camping.swb.de 1 2026-08-27 2026-08-27 ok
www.camping.swb.de 1 2026-08-27 2026-08-27 ok
auth.swb.de 13 2026-05-06 2026-09-15 ok
click.swb.de 7 2026-05-26 2026-09-19 ok
link.swb.de 7 2026-05-28 2026-09-22 ok
portal.swb.de 15 2026-04-25 2026-08-25 ok
www.portal.swb.de 10 2026-04-25 2026-08-25 ok
profil.swb.de 5 2026-05-19 2026-09-18 ok
kon.profil.swb.de 6 2026-05-19 2026-09-18 ok
test.profil.swb.de 5 2026-05-19 2026-09-18 ok
ddm.swb.de 5 2026-04-19 2026-09-26 ok
wlan.swb.de 5 2026-04-26 2026-08-25 ok
empfehlen.swb.de 9 2026-04-13 2026-09-27 ok
www.empfehlen.swb.de 9 2026-04-13 2026-09-27 ok
bestellen.swb.de 4 2025-07-16 2026-06-17 ok
mein.swb.de 1 2025-11-10 2025-11-10 ok
webhosting.mein.swb.de 5 2026-05-01 2026-08-31 ok
tkgk.mein.swb.de 2 2025-08-12 2026-07-13 ok
tkpk.mein.swb.de 2 2025-08-12 2026-07-13 ok
mail.mein.swb.de 5 2026-05-12 2026-09-11 ok
domain.mein.swb.de 5 2026-05-01 2026-08-31 ok
webhosting.kon.mein.swb.de 5 2026-05-01 2026-08-31 ok
tkgk.kon.mein.swb.de 2 2025-08-12 2026-07-13 ok
tkpk.kon.mein.swb.de 2 2025-08-12 2026-07-13 ok
mail.kon.mein.swb.de 5 2026-05-12 2026-09-11 ok
domain.kon.mein.swb.de 5 2026-05-01 2026-08-31 ok
webhosting.test.mein.swb.de 5 2026-05-01 2026-08-31 ok
tkgk.test.mein.swb.de 2 2025-08-12 2026-07-13 ok
tkpk.test.mein.swb.de 2 2025-08-12 2026-07-13 ok
mail.test.mein.swb.de 5 2026-05-12 2026-09-11 ok
domain.test.mein.swb.de 5 2026-05-01 2026-08-31 ok
login.swb.de 2 2025-10-08 2026-09-08 ok
termin.swb.de 2 2025-10-02 2026-09-24 ok
auth.kon.swb.de 22 2026-04-20 2026-10-02 ok
app.swb.de 4 2026-04-22 2026-08-18 ok
jobs.swb.de 28 2026-05-03 2026-09-27 ok
links.swb.de 5 2026-05-29 2026-09-26 ok
css.swb.de 4 2026-03-16 2026-09-14 ok
bewegt.swb.de 1 2026-05-20 2026-05-20 ok
www.bewegt.swb.de 1 2026-05-20 2026-05-20 ok
kundenzufriedenheit.swb.de 2 2025-07-08 2026-06-07 ok
auth.test.swb.de 20 2026-04-20 2026-10-02 ok
www.swb.de 5 2026-03-23 2026-09-22 ok

Programmatic access, with DNS A records: API GET /v1/hosts/swb.de (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/swb.de.