rsj.or.jp

Observed Jul 27, 2026, 03:57 UTC (5d ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Up right now

Email byGoogle (SPF sender)

Secured byLet's Encrypt

1 subdomain · majestic

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

INFRASTRUCTURE MAPwhat rsj.or.jp actually stands on - every host below is a signed observation

rsj.or.jp

A / AAAA

183.90.238.50

unattributedserves the site

ns4.xserver.jpns2.xserver.jpns5.xserver.jpns3.xserver.jp+1 more

xserver.jpanswers its DNS

rsj.or.jp

Google (SPF sender)receives its email

TLS

www.rsj.or.jp

Let's Encryptissued its certificate

DNS Records

A 1

183.90.238.50

MX 1

0rsj.or.jp

TXT 2

v=spf1 ip4:183.90.238.50 include:spf.sender.xserver.jp include:_spf.google.com include:kktcs.co.jp ~all
v=DMARC1; p=none; rua=mailto:service@rsj.or.jp

NS 5

ns4.xserver.jp
ns2.xserver.jp
ns5.xserver.jp
ns3.xserver.jp
ns1.xserver.jp

SOA 1

ns1.xserver.jp root.sv0.xserver.jp

TLS Certificates (3)

Common Name	Issuer	Expires
`www.rsj.or.jp`	C=US, O=Let's Encrypt, CN=YR1	Sat, 12 Sep 2026 02:13:16 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.rsj.or.jp

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 rsj.or.jp. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_6e474da0d2acecf2
Output Hash: 3804aef61a0c8da5aa8f2e167bcc490c987533f5db2215fdbff860f2310ec023
Signature: ed25519:ff70805ab921bb5bfe12fd731811cdd33880d948f59fc37544704991e636069629bdf9428e9859c48d136bbf2d142288c1a0600fc35028cca8fa4229bd82240d
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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