river.or.jp

Observed Jul 26, 2026, 06:20 UTC (6d 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.

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Up right now

Email byMicrosoft 365

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 river.or.jp actually stands on - every host below is a signed observation

river.or.jp

ns014-4n55jl3umqc4nbgj.4.d-53.jpns014-4n55jl3umqc4nbgj.4.d-53.netns014-4n55jl3umqc4nbgj.4.d-53.info

d-53.jp + d-53.net + moreanswers its DNS

river-or-jp.mail.protection.outlook.com

Microsoft 365receives its email

TLS

river.or.jp

Let's Encryptissued its certificate

DNS Records

MX 1

0river-or-jp.mail.protection.outlook.com

TXT 3

seculio-domain-verification-code=5193db0b93cf54ef2e6c83db2b4188fa694f957731d32264a6995e29c7278af1
v=spf1 include:mdalthea.maildealer.jp include:spf.mta.hdems.com include:spf.protection.outlook.com include:frics-mail.sakura.ne.jp +ip4:202.214.63.0/25 +ip4:210.129.56.120 +ip4:133.242.25.172 +ip4:210.148.230.0/25 +ip4:202.221.139.130/24 ~all
v=DMARC1; p=quarantine; rua=mailto:dmarc-rua@river.or.jp

NS 3

ns014-4n55jl3umqc4nbgj.4.d-53.jp
ns014-4n55jl3umqc4nbgj.4.d-53.net
ns014-4n55jl3umqc4nbgj.4.d-53.info

SOA 1

ns000.d-53.net dns-managers.iij.ad.jp

TLS Certificates (0)

None.

Subdomains (0)

None observed.

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

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

Ed25519 Receipt

Receipt ID: rcpt_c457efa99e061c63
Output Hash: 094f39808140da8f0dc3b298830cc9f672865a1c4d05fbe07c6078b0517a7455
Signature: ed25519:0475127ebec127d4ee0f3df9557f3c715bec1727613613712282873951f6dcf6fecc688e4f08286f52575d4c7c336f90b33a7d98aba803b2306119eb1321590b
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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