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) · 852 ms

HostCertsFirst seenLast seenDNS
westjr.co.jp 11 2025-10-01 2026-09-16 nodata
*.westjr.co.jp 5 2025-10-01 2026-09-16 —
xcw3sv10.westjr.co.jp 1 2026-04-23 2026-04-23 nxdomain
ygwfsv30.westjr.co.jp 1 2026-02-02 2026-02-02 nxdomain
xcw3sv50.westjr.co.jp 1 2026-04-23 2026-04-23 nxdomain
xbw3sv60.westjr.co.jp 1 2025-11-11 2025-11-11 nxdomain
xbw3sv70.westjr.co.jp 2 2025-10-21 2026-10-02 nxdomain
atalsv11.westjr.co.jp 1 2025-11-07 2025-11-07 nxdomain
keapsv11.westjr.co.jp 1 2026-01-27 2026-01-27 nxdomain
ketrsv11.westjr.co.jp 1 2026-01-27 2026-01-27 nxdomain
xbw3sv21.westjr.co.jp 1 2025-11-11 2025-11-11 nxdomain
xcunsv21.westjr.co.jp 1 2026-01-19 2026-01-19 nxdomain
keapsv21.westjr.co.jp 1 2026-05-27 2026-05-27 nxdomain
ketrsv21.westjr.co.jp 1 2026-05-27 2026-05-27 nxdomain
xbw3sv31.westjr.co.jp 2 2025-10-21 2026-10-02 nxdomain
atalsv51.westjr.co.jp 1 2025-11-07 2025-11-07 nxdomain
xcunsv61.westjr.co.jp 1 2026-01-07 2026-01-07 nxdomain
test-trafficinfo-2.westjr.co.jp 11 2025-08-05 2026-01-07 nxdomain
voice-web3.westjr.co.jp 1 2025-08-15 2025-08-15 nxdomain
t-voice-web3.westjr.co.jp 1 2025-08-15 2025-08-15 nxdomain
voice3.westjr.co.jp 1 2025-08-15 2025-08-15 nxdomain
t-voice3.westjr.co.jp 1 2025-08-15 2025-08-15 nxdomain
*.mobileicoca.westjr.co.jp 2 2025-06-23 2026-07-13 —
sc.mobileicoca.westjr.co.jp 1 2025-10-14 2025-10-14 nxdomain
hiroshima.westjr.co.jp 4 2026-05-14 2026-05-14 ok
lucua.westjr.co.jp 4 2026-05-14 2026-05-14 ok
portaclub.westjr.co.jp 4 2026-05-14 2026-05-14 ok
cubeclub.westjr.co.jp 4 2026-05-14 2026-05-14 ok
shamineclub.westjr.co.jp 4 2026-05-14 2026-05-14 ok
albiclub.westjr.co.jp 4 2026-05-14 2026-05-14 ok
mioclub.westjr.co.jp 4 2026-05-14 2026-05-14 ok
e5489.sc.westjr.co.jp 1 2025-10-20 2025-10-20 nxdomain
r-e5489.sc.westjr.co.jp 1 2025-10-20 2025-10-20 nxdomain
t-e5489.sc.westjr.co.jp 3 2025-09-30 2026-09-14 nxdomain
wakayamamiocard.westjr.co.jp 4 2026-05-14 2026-05-14 ok
plusplace.westjr.co.jp 5 2025-12-25 2026-08-06 ok
*.plusplace.westjr.co.jp 1 2025-12-25 2025-12-25 —
*.stg.plusplace.westjr.co.jp 1 2026-01-27 2026-01-27 —
www.stg.plusplace.westjr.co.jp 1 2025-12-21 2025-12-21 nxdomain
*.train-guide.westjr.co.jp 1 2025-10-29 2025-10-29 —
direct-storage.westjr.co.jp 2 2026-05-18 2026-05-20 ok
dev.tabiwa.agile.westjr.co.jp 5 2025-07-11 2026-06-11 ok
*.dev.tabiwa.agile.westjr.co.jp 5 2025-07-11 2026-06-11 —
ext-api.agile.westjr.co.jp 1 2026-05-27 2026-05-27 ok
*.ext-api.agile.westjr.co.jp 1 2026-05-27 2026-05-27 —
stg.ext-api.agile.westjr.co.jp 1 2026-01-05 2026-01-05 ok
*.stg.ext-api.agile.westjr.co.jp 1 2026-01-05 2026-01-05 —
dev.ext-api.agile.westjr.co.jp 1 2025-12-03 2025-12-03 ok
*.dev.ext-api.agile.westjr.co.jp 1 2025-12-03 2025-12-03 —
static.stg.wester.agile.westjr.co.jp 1 2026-05-22 2026-05-22 nxdomain
*.static.stg.wester.agile.westjr.co.jp 1 2026-05-22 2026-05-22 —
backend.stg.wester.agile.westjr.co.jp 3 2026-05-22 2026-05-26 nxdomain
*.backend.stg.wester.agile.westjr.co.jp 3 2026-05-22 2026-05-26 —
cdn.stg.wester.agile.westjr.co.jp 3 2026-05-24 2026-05-26 nxdomain
*.cdn.stg.wester.agile.westjr.co.jp 3 2026-05-24 2026-05-26 —
webview.stg.wester.agile.westjr.co.jp 1 2026-05-22 2026-05-22 nxdomain
*.webview.stg.wester.agile.westjr.co.jp 1 2026-05-22 2026-05-22 —
static.sandbox.wester.agile.westjr.co.jp 4 2026-05-16 2026-05-16 nxdomain
*.static.sandbox.wester.agile.westjr.co.jp 4 2026-05-16 2026-05-16 —
backend.sandbox.wester.agile.westjr.co.jp 6 2026-05-16 2026-05-26 nxdomain
*.backend.sandbox.wester.agile.westjr.co.jp 8 2026-04-30 2026-05-26 —
cdn.sandbox.wester.agile.westjr.co.jp 2 2026-05-26 2026-05-26 nxdomain
*.cdn.sandbox.wester.agile.westjr.co.jp 2 2026-05-26 2026-05-26 —
webview.sandbox.wester.agile.westjr.co.jp 2 2026-05-16 2026-05-16 nxdomain
*.webview.sandbox.wester.agile.westjr.co.jp 2 2026-05-16 2026-05-16 —
sandbox.agile.westjr.co.jp 1 2026-04-28 2026-04-28 nodata
*.sandbox.agile.westjr.co.jp 3 2025-07-14 2025-07-15 —
tabiwa.sandbox.agile.westjr.co.jp 13 2025-08-22 2025-11-07 nxdomain
*.tabiwa.sandbox.agile.westjr.co.jp 13 2025-08-22 2025-11-07 —
tanaka.tabiwa.sandbox.agile.westjr.co.jp 1 2025-09-02 2025-09-02 nxdomain
*.tanaka.tabiwa.sandbox.agile.westjr.co.jp 1 2025-09-02 2025-09-02 —
koizumi.tabiwa.sandbox.agile.westjr.co.jp 19 2025-09-01 2026-03-24 nxdomain
*.koizumi.tabiwa.sandbox.agile.westjr.co.jp 19 2025-09-01 2026-03-24 —
joyone.westjr.co.jp 4 2026-05-14 2026-05-14 ok
oskcscwise.westjr.co.jp 1 2026-02-16 2026-02-16 nxdomain
sunste.westjr.co.jp 4 2026-05-14 2026-05-14 ok
virtual-shmeeting.westjr.co.jp 2 2026-05-25 2026-05-25 ok
stg.westjr.co.jp 18 2025-10-08 2026-08-24 nxdomain
upb.exg-stg.westjr.co.jp 1 2026-09-09 2026-09-09 ok
twrmd.exg-stg.westjr.co.jp 3 2026-04-27 2026-08-14 ok
ekmyg.exg-stg.westjr.co.jp 5 2026-07-01 2026-08-30 ok
wwmyg.exg-stg.westjr.co.jp 5 2026-04-19 2026-10-01 ok
medi.exg-stg.westjr.co.jp 3 2026-05-26 2026-09-10 ok
precom.exg-stg.westjr.co.jp 3 2026-06-03 2026-09-18 ok
wwmts.exg-stg.westjr.co.jp 3 2026-06-02 2026-09-19 ok
aip-app-stg.westjr.co.jp 1 2026-02-12 2026-02-12 ok
upb.exg.westjr.co.jp 1 2026-10-06 2026-10-06 ok
twrmd.exg.westjr.co.jp 3 2026-05-15 2026-09-03 ok
ekmyg.exg.westjr.co.jp 4 2026-07-27 2026-09-20 ok
wwmyg.exg.westjr.co.jp 3 2026-05-21 2026-09-05 ok
medi.exg.westjr.co.jp 4 2026-06-02 2026-09-17 ok
precom.exg.westjr.co.jp 3 2026-05-03 2026-08-17 ok
wwmts.exg.westjr.co.jp 3 2026-05-17 2026-09-03 ok
srh.westjr.co.jp 3 2025-08-27 2026-09-14 ok
jrw-bsh.westjr.co.jp 1 2026-06-02 2026-06-02 ok
ks.jrw-bsh.westjr.co.jp 1 2026-06-02 2026-06-02 ok
auth.westjr.co.jp 7 2026-01-22 2026-07-16 ok
stg.auth.westjr.co.jp 18 2025-10-08 2026-08-24 ok
fido.stg.auth.westjr.co.jp 2 2025-10-29 2026-09-29 ok
fido.auth.westjr.co.jp 1 2025-12-12 2025-12-12 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/westjr.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/westjr.co.jp.