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.

55 hosts · 326 ms

HostCertsFirst seenLast seenDNS
aeon.co.jp 2 2025-12-04 2026-03-02 ok
www-t.origin.payment2.aeon.co.jp 2 2025-10-06 2026-10-01 ok
www.origin.payment2.aeon.co.jp 2 2025-10-06 2026-10-01 ok
www-t.payment2.aeon.co.jp 2 2025-10-07 2026-10-01 ok
www.payment2.aeon.co.jp 2 2025-10-07 2026-10-01 ok
area.aeon.co.jp 2 2026-01-22 2026-01-22 ok
resource.aeon.co.jp 1 2025-12-04 2025-12-04 nxdomain
www.questionnaire.aeon.co.jp 1 2026-03-11 2026-03-11 ok
*.sd38863.herbstarsbuilding.aeon.co.jp 8 2026-03-17 2026-10-03 —
mycrowdfunding.aeon.co.jp 2 2025-12-12 2025-12-12 ok
*.mycrowdfunding.aeon.co.jp 2 2025-12-12 2025-12-12 —
catalog.aeon.co.jp 1 2025-10-08 2025-10-08 ok
cmpkauth-stg.aeon.co.jp 3 2026-01-22 2026-01-28 ok
pointmall-stg.aeon.co.jp 3 2025-10-16 2026-09-16 ok
cmpkauth-fido-stg.aeon.co.jp 2 2026-03-02 2026-06-03 ok
walletapp-stg.aeon.co.jp 2 2025-12-10 2026-09-01 ok
www-stg.aeon.co.jp 1 2026-02-27 2026-02-27 ok
web-research.aeon.co.jp 2 2026-01-27 2026-01-27 ok
cmpkauth.aeon.co.jp 3 2026-01-22 2026-01-28 ok
selfcheck.aeon.co.jp 2 2026-02-02 2026-02-02 ok
trck.aeon.co.jp 5 2026-06-02 2026-08-13 ok
email.aeon.co.jp 3 2025-10-02 2026-10-06 ok
t3.ma2.email.aeon.co.jp 1 2026-02-10 2026-02-10 ok
m4.ma2.email.aeon.co.jp 1 2026-02-10 2026-02-10 ok
m5.ma2.email.aeon.co.jp 1 2026-02-10 2026-02-10 ok
pointmall.aeon.co.jp 5 2025-09-09 2026-08-10 ok
*.pointmall.aeon.co.jp 3 2025-09-09 2026-08-10 —
game.pointmall.aeon.co.jp 4 2025-12-04 2025-12-10 ok
walletapp-stg-origin.aeon.co.jp 1 2026-02-27 2026-02-27 ok
www-stg.ms-origin.aeon.co.jp 1 2026-02-27 2026-02-27 ok
www.ms-origin.aeon.co.jp 1 2026-02-27 2026-02-27 ok
www-dx.ms-origin.aeon.co.jp 1 2026-02-27 2026-02-27 ok
walletapp-dx.aw-origin.aeon.co.jp 1 2026-02-27 2026-02-27 ok
affitown.aeon.co.jp 1 2025-08-15 2025-08-15 nodata
cmpkauth-fido.aeon.co.jp 2 2026-03-02 2026-07-08 ok
furusato.aeon.co.jp 4 2026-03-10 2026-08-15 ok
*.furusato.aeon.co.jp 4 2026-03-10 2026-08-15 —
faq.aeon.co.jp 1 2025-10-15 2025-10-15 ok
waonpoint-dr.aeon.co.jp 2 2025-06-27 2026-07-08 nxdomain
www.merchantregister.aeon.co.jp 1 2025-10-29 2025-10-29 ok
qr.aeon.co.jp 3 2025-10-31 2026-10-01 ok
hsr-fgt01.acs.aeon.co.jp 2 2025-09-26 2026-10-01 nxdomain
hsr-fgt02.acs.aeon.co.jp 2 2025-09-26 2026-10-01 nxdomain
hsr-entry.acs.aeon.co.jp 2 2025-09-26 2026-10-01 nxdomain
sms.aeon.co.jp 1 2026-04-13 2026-04-13 ok
cmpkauth-fido-t.aeon.co.jp 2 2026-03-02 2026-07-08 nodata
www-t.aeon.co.jp 2 2025-07-01 2026-03-05 nxdomain
collect.aeon.co.jp 1 2026-01-18 2026-01-18 ok
www.merchant.aeon.co.jp 3 2026-02-17 2026-02-18 ok
waonpoint.aeon.co.jp 2 2025-06-27 2026-07-08 nxdomain
www.kiyaku.aeon.co.jp 2 2026-04-14 2026-10-01 ok
waonpoint-dev.aeon.co.jp 2 2025-06-27 2026-07-08 nxdomain
www.aeon.co.jp 3 2025-07-01 2026-03-05 ok
stg-dx.aeon.co.jp 1 2026-02-27 2026-02-27 ok
walletapp-dx.aeon.co.jp 2 2025-12-10 2026-09-01 ok

Programmatic access, with DNS A records: API GET /v1/hosts/aeon.co.jp (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/aeon.co.jp.