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.

100 hosts (first page) · 364 ms

HostCertsFirst seenLast seenDNS
*.netbk.co.jp 4 2025-09-30 2026-09-27 —
c-uat1-pl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-pl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-pl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-pl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-mpl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-mpl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-mpl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-mpl1-6001.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-pl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-pl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-pl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-pl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-mpl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-mpl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-mpl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-mpl2-6001.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-pl3-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-pl3-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-pl3-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-pl3-6001.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-pl4-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-pl4-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-pl4-6001.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-pl4-6001.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
prd.argo1.netbk.co.jp 2 2025-09-01 2026-08-02 ok
dev.argo1.netbk.co.jp 1 2026-02-04 2026-02-04 ok
hub.dev-r1.netbk.co.jp 8 2025-09-08 2026-09-10 ok
mng-hub.dev-r1.netbk.co.jp 5 2025-10-09 2026-09-10 nodata
neobank.dev-r1.netbk.co.jp 14 2025-10-12 2026-10-06 ok
api.neobank.dev-r1.netbk.co.jp 20 2025-09-17 2026-10-06 ok
authn.neobank.dev-r1.netbk.co.jp 16 2025-08-01 2026-10-06 ok
in-authn.neobank.dev-r1.netbk.co.jp 2 2025-08-05 2026-07-06 nodata
tneobank.dev-r1.netbk.co.jp 12 2025-08-25 2026-10-06 ok
api.tneobank.dev-r1.netbk.co.jp 18 2025-09-17 2026-10-06 ok
authn.tneobank.dev-r1.netbk.co.jp 14 2025-08-01 2026-10-06 ok
in-authn.tneobank.dev-r1.netbk.co.jp 2 2025-08-05 2026-07-06 nodata
jal.dev-r1.netbk.co.jp 14 2025-10-12 2026-10-06 ok
api.jal.dev-r1.netbk.co.jp 22 2025-09-17 2026-10-06 ok
authn.jal.dev-r1.netbk.co.jp 18 2025-08-01 2026-10-06 ok
in-authn.jal.dev-r1.netbk.co.jp 2 2025-08-05 2026-07-06 nodata
himeginneo.dev-r1.netbk.co.jp 13 2025-10-12 2026-10-06 ok
api.himeginneo.dev-r1.netbk.co.jp 19 2025-09-17 2026-10-06 ok
authn.himeginneo.dev-r1.netbk.co.jp 15 2025-08-01 2026-10-06 ok
in-authn.himeginneo.dev-r1.netbk.co.jp 2 2025-08-05 2026-07-06 nodata
business-member.dev-r1.netbk.co.jp 7 2025-11-19 2026-08-17 ok
www.dev-r1.netbk.co.jp 12 2025-10-12 2026-10-06 ok
api.www.dev-r1.netbk.co.jp 18 2025-09-17 2026-10-06 ok
authn.www.dev-r1.netbk.co.jp 14 2025-08-01 2026-10-06 ok
in-authn.www.dev-r1.netbk.co.jp 2 2025-08-05 2026-07-06 nodata
authz.dev-r1.netbk.co.jp 14 2025-08-01 2026-10-06 ok
devwww-r1.netbk.co.jp 4 2025-10-12 2026-08-17 ok
dev-v1.netbk.co.jp 3 2025-10-15 2026-09-15 ok
hub.dev-v1.netbk.co.jp 9 2025-09-08 2026-09-10 ok
mng-hub.dev-v1.netbk.co.jp 10 2025-09-08 2026-09-10 ok
neobank.dev-v1.netbk.co.jp 15 2025-12-08 2026-10-06 ok
api.neobank.dev-v1.netbk.co.jp 15 2025-12-22 2026-10-06 ok
authn.neobank.dev-v1.netbk.co.jp 15 2025-08-01 2026-10-06 ok
in-authn.neobank.dev-v1.netbk.co.jp 4 2025-08-05 2026-09-02 nodata
in-authn-dr.neobank.dev-v1.netbk.co.jp 2 2025-08-28 2026-07-29 nodata
tneobank.dev-v1.netbk.co.jp 13 2025-08-25 2026-10-06 ok
api.tneobank.dev-v1.netbk.co.jp 13 2025-12-22 2026-10-06 ok
authn.tneobank.dev-v1.netbk.co.jp 13 2025-08-01 2026-10-06 ok
in-authn.tneobank.dev-v1.netbk.co.jp 4 2025-08-05 2026-09-02 nodata
in-authn-dr.tneobank.dev-v1.netbk.co.jp 2 2025-08-28 2026-07-29 nodata
jal.dev-v1.netbk.co.jp 14 2025-12-08 2026-10-06 ok
api.jal.dev-v1.netbk.co.jp 17 2025-12-22 2026-10-06 ok
authn.jal.dev-v1.netbk.co.jp 17 2025-08-01 2026-10-06 ok
in-authn.jal.dev-v1.netbk.co.jp 4 2025-08-05 2026-09-02 nodata
in-authn-dr.jal.dev-v1.netbk.co.jp 2 2025-08-28 2026-07-29 nodata
himeginneo.dev-v1.netbk.co.jp 14 2025-12-08 2026-10-06 ok
api.himeginneo.dev-v1.netbk.co.jp 14 2025-12-22 2026-10-06 ok
authn.himeginneo.dev-v1.netbk.co.jp 14 2025-08-01 2026-10-06 ok
in-authn.himeginneo.dev-v1.netbk.co.jp 4 2025-08-05 2026-09-02 nodata
in-authn-dr.himeginneo.dev-v1.netbk.co.jp 2 2025-08-28 2026-07-29 nodata
business-member.dev-v1.netbk.co.jp 8 2025-11-19 2026-08-17 ok
apigw.dev-v1.netbk.co.jp 11 2026-01-23 2026-09-15 ok
www.dev-v1.netbk.co.jp 13 2025-09-12 2026-10-06 ok
api.www.dev-v1.netbk.co.jp 13 2025-12-22 2026-10-06 ok
authn.www.dev-v1.netbk.co.jp 13 2025-08-01 2026-10-06 ok
in-authn.www.dev-v1.netbk.co.jp 4 2025-08-05 2026-09-02 nodata
in-authn-dr.www.dev-v1.netbk.co.jp 2 2025-08-28 2026-07-29 nodata
authz.dev-v1.netbk.co.jp 15 2025-08-01 2026-10-06 ok
c-uat1-pl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-pl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-pl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-pl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-mpl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-mpl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-mpl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-mpl1-6002.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-pl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-pl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-pl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-pl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-mpl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
api.c-uat1-mpl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
authn.c-uat1-mpl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok
in-authn.c-uat1-mpl2-6002.netbk.co.jp 6 2025-10-14 2026-09-14 nodata
c-uat1-pl3-6002.netbk.co.jp 6 2025-10-14 2026-09-14 ok

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/netbk.co.jp.

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/netbk.co.jp.