yahoo.co.jp

Observed Jul 21, 2026, 19:36 UTC (6h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onYahoo Japan

Secured byCybertrust Japan Co.

Also usesGoogle Search Console

21 subdomains · push_legacy

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat yahoo.co.jp actually stands on - every host below is a signed observation

yahoo.co.jp

A / AAAA

183.79.219.124183.79.219.252124.83.184.124182.22.28.252+14 more

Yahoo Japanserves the site

ns01.yahoo.co.jpns12.yahoo.co.jpns11.yahoo.co.jpns02.yahoo.co.jp

yahoo.co.jpanswers its DNS

mx2.mail.yahoo.co.jpmx5.mail.yahoo.co.jpmx1.mail.yahoo.co.jpmx3.mail.yahoo.co.jp

yahoo.co.jpreceives its email

TLS

edge01.yahoo.co.jp

Cybertrust Japan Co.issued its certificate

DNS Records

A 18

183.79.219.124
183.79.219.252
124.83.184.124
182.22.28.252
183.79.249.124
182.22.24.124
124.83.185.124
124.83.185.252
182.22.16.123
182.22.16.251

MX 4

10mx2.mail.yahoo.co.jp
10mx5.mail.yahoo.co.jp
10mx1.mail.yahoo.co.jp
10mx3.mail.yahoo.co.jp

TXT 3

v=spf1 include:spf.yahoo.co.jp ~all
google-site-verification=GvbYgNin-mY73VbS4IJK2D8nI3tHEf2NpRdy76VYqBU
v=DMARC1; p=quarantine; rua=mailto:ymail_dmarc_report@yahoo.co.jp

NS 4

ns01.yahoo.co.jp
ns12.yahoo.co.jp
ns11.yahoo.co.jp
ns02.yahoo.co.jp

SOA 1

yahoo.co.jp postmaster.yahoo.co.jp

CAA 4

issue "digicert.com; cansignhttpexchanges=yes"
iodef "mailto:nic-admin@mail.yahoo.co.jp"
issue "cybertrust.ne.jp"
issue "globalsign.com"

TLS Certificates (2)

Common Name	Issuer	Expires
`edge01.yahoo.co.jp`	C=JP, O=Cybertrust Japan Co., Ltd., CN=Cybertrust Japan SureServer CA G4	Fri, 04 Dec 2026 14:59:00 +0000
`Cybertrust Japan SureServer CA G4`	C=JP, O=SECOM Trust Systems CO.,LTD., 2.5.4.11=Security Communication RootCA2	Tue, 29 May 2029 05:00:39 +0000

Subdomains (21)

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for yahoo.co.jp. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/yahoo.co.jp">
  <img src="https://domaindrift.io/badge/yahoo.co.jp.svg"
       width="300" height="64" alt="DomainDrift signed observations for yahoo.co.jp">
</a>

Ed25519 Receipt

Receipt ID: rcpt_496be089cc264497
Output Hash: 38190a77d32d80de5652d45537b1a77c651e8016307e6044c2cf14857983c97a
Signature: ed25519:929b76b8f048fca3d448b0a50fa788292c1aa8f4ca6ffa803c4e4b4cc252bad19f2b9925ac10ea537ae457ce9da0b15ee8e29345c9338ff4349c8821175afe0d
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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