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) · 393 ms

HostCertsFirst seenLast seenDNS
mynavi.jp 4 2025-09-24 2026-08-25 ok
*.mynavi.jp 8 2025-08-22 2026-08-25 —
gce2020.mynavi.jp 4 2026-04-14 2026-08-12 ok
job-photo2.mynavi.jp 4 2026-08-26 2026-08-26 ok
m-a.mynavi.jp 4 2025-10-09 2026-09-09 ok
stg.m-a.mynavi.jp 4 2025-10-02 2026-09-04 ok
tracking.ma.mynavi.jp 5 2026-06-07 2026-10-03 ok
pharma.mynavi.jp 2 2025-08-12 2026-07-13 ok
*.pharma.mynavi.jp 3 2025-08-27 2026-07-27 —
catrd.pharma.mynavi.jp 5 2026-05-11 2026-09-08 ok
ikvjvw.pharma.mynavi.jp 2 2026-05-17 2026-07-28 ok
cpa.mynavi.jp 4 2025-10-03 2026-09-03 ok
stg.cpa.mynavi.jp 4 2025-06-09 2026-05-11 ok
lp.cpa.mynavi.jp 1 2026-09-29 2026-09-29 ok
bpo-staffing-seg-intra.mynavi.jp 4 2025-07-03 2026-06-03 ok
healthcare-wellness-seg-intra.mynavi.jp 4 2026-03-17 2026-08-17 ok
usa.mynavi.jp 2 2025-07-01 2026-06-01 ok
taiwa.mynavi.jp 2 2026-02-09 2026-02-09 ok
stg.taiwa.mynavi.jp 2 2026-02-09 2026-02-09 ok
ai.stg.taiwa.mynavi.jp 2 2026-02-18 2026-02-18 ok
ai.taiwa.mynavi.jp 2 2026-02-18 2026-02-18 ok
career-ed-lab.mynavi.jp 5 2026-05-10 2026-09-06 ok
stg.career-ed-lab.mynavi.jp 5 2026-05-22 2026-09-19 ok
hr-trend-lab.mynavi.jp 2 2025-06-12 2026-05-13 ok
stg.hr-trend-lab.mynavi.jp 2 2025-06-30 2026-05-31 ok
cm-marketinglab.mynavi.jp 2 2025-12-03 2025-12-03 ok
go.cm-marketinglab.mynavi.jp 10 2026-04-28 2026-09-25 ok
dev.cm-marketinglab.mynavi.jp 2 2025-12-03 2025-12-03 ok
teenslab.mynavi.jp 4 2025-07-15 2026-09-16 ok
dev.teenslab.mynavi.jp 4 2025-06-14 2026-05-14 ok
pre.dev.teenslab.mynavi.jp 4 2025-06-14 2026-05-14 ok
mcb.mynavi.jp 1 2025-12-10 2025-12-10 ok
job.mynavi.jp 2 2025-10-06 2025-10-06 ok
*.job.mynavi.jp 1 2025-10-06 2025-10-06 —
test2.trend-ai.job.mynavi.jp 1 2026-04-15 2026-04-15 nodata
www.test2.trend-ai.job.mynavi.jp 1 2026-04-15 2026-04-15 nodata
prod.trend-ai.job.mynavi.jp 3 2026-04-15 2026-09-29 ok
www.prod.trend-ai.job.mynavi.jp 3 2026-04-15 2026-09-29 nodata
test.trend-ai.job.mynavi.jp 1 2026-04-15 2026-04-15 nodata
www.test.trend-ai.job.mynavi.jp 1 2026-04-15 2026-04-15 nodata
prod.checker-ai.job.mynavi.jp 1 2026-06-11 2026-06-11 ok
www.prod.checker-ai.job.mynavi.jp 1 2026-06-11 2026-06-11 nodata
prod.point-ai.job.mynavi.jp 1 2026-05-08 2026-05-08 ok
www.prod.point-ai.job.mynavi.jp 1 2026-05-08 2026-05-08 nodata
manuscript-checker.job.mynavi.jp 1 2026-07-14 2026-07-14 ok
stg.manuscript-checker.job.mynavi.jp 1 2026-07-14 2026-07-14 ok
cloud.cs.job.mynavi.jp 1 2025-11-06 2025-11-06 ok
image.cs.job.mynavi.jp 2 2026-01-05 2026-01-14 ok
click.cs.job.mynavi.jp 1 2025-11-06 2025-11-06 ok
view.cs.job.mynavi.jp 1 2025-11-06 2025-11-06 ok
t.job.mynavi.jp 1 2025-10-06 2025-10-06 nodata
*.t.job.mynavi.jp 1 2025-10-06 2025-10-06 —
account.t12.t.job.mynavi.jp 2 2025-08-30 2026-07-31 ok
test2.trend-ai.t.job.mynavi.jp 1 2026-05-10 2026-05-10 ok
www.test2.trend-ai.t.job.mynavi.jp 1 2026-05-10 2026-05-10 nxdomain
test.trend-ai.t.job.mynavi.jp 1 2026-05-10 2026-05-10 ok
www.test.trend-ai.t.job.mynavi.jp 1 2026-05-10 2026-05-10 nxdomain
test.checker-ai.t.job.mynavi.jp 1 2026-06-11 2026-06-11 ok
www.test.checker-ai.t.job.mynavi.jp 1 2026-06-11 2026-06-11 nxdomain
test2.point-ai.t.job.mynavi.jp 1 2025-10-25 2025-10-25 ok
www.test2.point-ai.t.job.mynavi.jp 1 2025-10-25 2025-10-25 nxdomain
learning.point-ai.t.job.mynavi.jp 1 2026-05-08 2026-05-08 ok
www.learning.point-ai.t.job.mynavi.jp 1 2026-05-08 2026-05-08 nxdomain
test.point-ai.t.job.mynavi.jp 1 2026-05-08 2026-05-08 ok
www.test.point-ai.t.job.mynavi.jp 1 2026-05-08 2026-05-08 nxdomain
account.t.job.mynavi.jp 2 2026-03-07 2026-07-23 ok
account.job.mynavi.jp 1 2025-12-10 2025-12-10 ok
hr-tech-hub.mynavi.jp 1 2025-11-20 2025-11-20 ok
stg.hr-tech-hub.mynavi.jp 1 2025-11-18 2025-11-18 ok
pub.mynavi.jp 4 2026-04-29 2026-09-29 ok
ad.pub.mynavi.jp 4 2026-04-29 2026-09-29 ok
stg.pub.mynavi.jp 2 2026-04-10 2026-09-10 ok
d2c.mynavi.jp 4 2026-04-22 2026-10-04 ok
go.d2c.mynavi.jp 9 2026-04-10 2026-09-07 ok
clinic.mynavi.jp 8 2026-06-10 2026-09-16 ok
career.concierge.poc.mynavi.jp 1 2026-07-14 2026-07-14 ok
msc.mynavi.jp 2 2026-02-04 2026-02-04 ok
pre.msc.mynavi.jp 2 2026-02-04 2026-02-04 nxdomain
stg.msc.mynavi.jp 2 2026-02-04 2026-02-04 ok
pre.stg.msc.mynavi.jp 2 2026-02-04 2026-02-04 nxdomain
customerportal.msc.mynavi.jp 4 2025-11-26 2026-04-10 ok
*.customerportal.msc.mynavi.jp 1 2025-11-26 2025-11-26 —
td-ssc.mynavi.jp 2 2025-06-19 2026-05-20 ok
mcid.mynavi.jp 4 2025-07-03 2026-06-04 ok
*.mcid.mynavi.jp 2 2025-07-04 2026-06-04 —
stg1.mcid.mynavi.jp 4 2026-04-12 2026-09-25 ok
*.stg1.mcid.mynavi.jp 2 2026-04-12 2026-09-12 —
account.stg1.mcid.mynavi.jp 6 2025-06-30 2026-08-20 ok
dev1.mcid.mynavi.jp 4 2026-03-04 2026-08-16 ok
*.dev1.mcid.mynavi.jp 2 2026-03-16 2026-08-16 —
account.dev1.mcid.mynavi.jp 3 2026-04-17 2026-09-17 ok
stg2.mcid.mynavi.jp 4 2025-08-17 2026-07-19 ok
*.stg2.mcid.mynavi.jp 2 2025-08-18 2026-07-19 —
account.stg2.mcid.mynavi.jp 2 2025-08-20 2026-07-21 ok
dev2.mcid.mynavi.jp 4 2025-06-24 2026-05-25 ok
*.dev2.mcid.mynavi.jp 2 2025-06-24 2026-05-25 —
account.dev2.mcid.mynavi.jp 2 2025-07-11 2026-06-11 ok
*.cid.mcid.mynavi.jp 2 2026-03-02 2026-07-18 —
account.mcid.mynavi.jp 2 2025-08-20 2026-07-21 ok
hrd.mynavi.jp 2 2026-02-22 2026-07-10 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/mynavi.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/mynavi.jp.