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) · 368 ms

HostCertsFirst seenLast seenDNS
web170.aflac.co.jp 1 2026-04-30 2026-04-30 nodata
test.web170.aflac.co.jp 1 2026-04-30 2026-04-30 nodata
dev.web170.aflac.co.jp 1 2026-04-30 2026-04-30 nodata
teamssbcprod01.aflac.co.jp 1 2026-02-03 2026-02-03 ok
web11.aflac.co.jp 2 2026-03-16 2026-09-02 nodata
test.web11.aflac.co.jp 2 2026-03-16 2026-09-02 nodata
dev.web11.aflac.co.jp 2 2026-03-16 2026-09-02 nodata
a-line1.aflac.co.jp 7 2026-01-08 2026-09-16 ok
dev1-a-line1.aflac.co.jp 1 2026-01-08 2026-01-08 ok
dev2-a-line1.aflac.co.jp 1 2026-01-08 2026-01-08 ok
st-a-line1.aflac.co.jp 3 2026-01-08 2026-09-07 ok
dr-line1.aflac.co.jp 3 2026-03-17 2026-09-16 ok
st-dr-line1.aflac.co.jp 3 2026-01-08 2026-09-07 nodata
s-line1.aflac.co.jp 3 2025-09-29 2026-02-27 ok
dev1-s-line1.aflac.co.jp 2 2025-08-21 2026-09-01 ok
dev2-s-line1.aflac.co.jp 2 2025-08-21 2026-09-01 ok
st-s-line1.aflac.co.jp 2 2025-08-21 2026-09-01 ok
plb.nnb-it1.aflac.co.jp 2 2025-10-30 2026-09-30 ok
sks.nnb-it1.aflac.co.jp 2 2025-10-30 2026-09-30 ok
smt.nnb-it1.aflac.co.jp 3 2025-10-30 2026-09-30 ok
plb.nnb-st1.aflac.co.jp 2 2025-10-30 2026-09-30 ok
sks.nnb-st1.aflac.co.jp 2 2025-10-30 2026-09-30 ok
smt.nnb-st1.aflac.co.jp 3 2025-10-30 2026-09-30 ok
smt-tr.nnb-ext1.aflac.co.jp 1 2026-05-22 2026-05-22 ok
smt.nnb-ext1.aflac.co.jp 1 2026-05-22 2026-05-22 ok
teamssbcprod02.aflac.co.jp 1 2026-02-03 2026-02-03 ok
web22.aflac.co.jp 2 2026-03-16 2026-09-02 nodata
test.web22.aflac.co.jp 2 2026-03-16 2026-09-02 nodata
dev.web22.aflac.co.jp 2 2026-03-16 2026-09-02 nodata
cca-mock.nnb-it2.aflac.co.jp 2 2026-04-02 2026-09-02 ok
smt-tr.nnb-it2.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt.nnb-it2.aflac.co.jp 2 2026-04-02 2026-09-02 ok
smt-tr.nnb-st2.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt.nnb-st2.aflac.co.jp 2 2025-06-27 2026-05-28 ok
web13.aflac.co.jp 3 2026-03-16 2026-09-02 nodata
test.web13.aflac.co.jp 3 2026-03-16 2026-09-02 nodata
dev.web13.aflac.co.jp 3 2026-03-16 2026-09-02 nodata
smt-tr.nnb-it3.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt.nnb-it3.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt-tr.nnb-st3.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt.nnb-st3.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt-tr.nnb-it4.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt.nnb-it4.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt-tr.nnb-st4.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt.nnb-st4.aflac.co.jp 2 2025-06-27 2026-05-28 ok
smt.nnb-it5.aflac.co.jp 1 2025-06-27 2025-06-27 nodata
smt.nnb-st5.aflac.co.jp 1 2025-06-27 2025-06-27 nodata
a-line9.aflac.co.jp 3 2026-02-27 2026-09-16 ok
st-a-line9.aflac.co.jp 3 2026-01-08 2026-09-07 nodata
rsvdb-qa.aflac.co.jp 2 2025-08-01 2026-07-02 ok
tableauqa.aflac.co.jp 1 2026-05-22 2026-05-22 nxdomain
plb.stgp-stb.rsvdb.aflac.co.jp 1 2026-02-06 2026-02-06 nodata
plb.prod.rsvdb.aflac.co.jp 4 2025-08-01 2026-07-02 ok
plb.stgp.rsvdb.aflac.co.jp 4 2025-08-01 2026-07-02 ok
plb.dev.rsvdb.aflac.co.jp 2 2025-08-01 2026-07-02 ok
plb.nnb.aflac.co.jp 4 2025-10-03 2026-09-03 ok
smt-tr.nnb.aflac.co.jp 2 2025-10-03 2026-09-03 nodata
smt.nnb.aflac.co.jp 2 2025-10-03 2026-09-03 nodata
rsvdb-qa-stb.aflac.co.jp 1 2026-02-06 2026-02-06 ok
prbfcwwb01.aflac.aflac.co.jp 1 2025-09-16 2025-09-16 nxdomain
pi1bdc01.aflac.aflac.co.jp 1 2026-06-02 2026-06-02 nxdomain
ppbfbwtl01.aflac.aflac.co.jp 1 2025-10-27 2025-10-27 nxdomain
prbfbwtl01.aflac.aflac.co.jp 2 2025-09-02 2026-09-15 nxdomain
psbfbwtl01.aflac.aflac.co.jp 1 2026-02-17 2026-02-17 nxdomain
pf6vap11.aflac.aflac.co.jp 1 2026-06-04 2026-06-04 nxdomain
rf6vap11.aflac.aflac.co.jp 1 2026-06-04 2026-06-04 nxdomain
sf6vap11.aflac.aflac.co.jp 1 2026-05-21 2026-05-21 nxdomain
plb.nnb-it1.aflac.aflac.co.jp 1 2026-04-09 2026-04-09 nxdomain
plb.nnb-st1.aflac.aflac.co.jp 1 2026-06-10 2026-06-10 nxdomain
pi1bdc02.aflac.aflac.co.jp 1 2026-06-02 2026-06-02 nxdomain
ppbfbwtl02.aflac.aflac.co.jp 1 2025-10-27 2025-10-27 nxdomain
prbfbwtl02.aflac.aflac.co.jp 2 2025-09-02 2026-09-15 nxdomain
psbfbwtl02.aflac.aflac.co.jp 1 2026-02-17 2026-02-17 nxdomain
df6vap12.aflac.aflac.co.jp 1 2026-06-04 2026-06-04 nxdomain
pf6vap12.aflac.aflac.co.jp 1 2026-06-04 2026-06-04 nxdomain
sf6vap12.aflac.aflac.co.jp 1 2026-05-21 2026-05-21 nxdomain
pi1bdc03.aflac.aflac.co.jp 1 2026-06-02 2026-06-02 nxdomain
ppbfbwtl03.aflac.aflac.co.jp 1 2025-10-27 2025-10-27 nxdomain
prbfbwtl03.aflac.aflac.co.jp 2 2025-09-02 2026-09-15 nxdomain
psbfbwtl03.aflac.aflac.co.jp 1 2026-02-17 2026-02-17 nxdomain
pi1vdc04.aflac.aflac.co.jp 1 2026-06-02 2026-06-02 nxdomain
EC2AMAZ-SQNCP95.aflac.aflac.co.jp 1 2026-05-27 2026-05-27 —
EC2AMAZ-6TD2O06.aflac.aflac.co.jp 1 2026-05-27 2026-05-27 —
EC2AMAZ-BB4MG69.aflac.aflac.co.jp 1 2026-05-27 2026-05-27 —
filteringsystemQA.aflac.aflac.co.jp 1 2026-06-01 2026-06-01 —
filteringsystemPROD.aflac.aflac.co.jp 1 2026-06-08 2026-06-08 —
EC2AMAZ-5SJ6L4I.aflac.aflac.co.jp 1 2026-05-22 2026-05-22 —
EC2AMAZ-KH4IB4T.aflac.aflac.co.jp 1 2026-05-27 2026-05-27 —
EC2AMAZ-3935I8T.aflac.aflac.co.jp 1 2026-05-22 2026-05-22 —
sca-frontend-qa.aflac.aflac.co.jp 1 2025-10-16 2025-10-16 nxdomain
cea-frontend-qa.aflac.aflac.co.jp 1 2026-05-13 2026-05-13 nxdomain
aipf-llmgw-qa.aflac.aflac.co.jp 3 2025-08-21 2026-08-07 nxdomain
nnb-ba-qa.baua.aflac.aflac.co.jp 1 2025-09-03 2025-09-03 nxdomain
nnb-ua-qa.baua.aflac.aflac.co.jp 1 2025-09-03 2025-09-03 nxdomain
nnb-ba-prod.baua.aflac.aflac.co.jp 1 2026-01-30 2026-01-30 nxdomain
nnb-ua-prod.baua.aflac.aflac.co.jp 1 2026-01-30 2026-01-30 nxdomain
mid.itb.middb.aflac.aflac.co.jp 1 2025-10-08 2025-10-08 nxdomain
mid.stb.middb.aflac.aflac.co.jp 1 2025-10-08 2025-10-08 nxdomain
mid.stgd.middb.aflac.aflac.co.jp 1 2025-10-08 2025-10-08 nxdomain
mid.prod.middb.aflac.aflac.co.jp 1 2025-10-08 2025-10-08 nxdomain

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/aflac.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/aflac.co.jp.