dupageco.org

Observed Jul 25, 2026, 16:49 UTC (7d 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 byMicrosoft 365

Secured byLet's Encrypt

1 subdomain · tranco

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

INFRASTRUCTURE MAPwhat dupageco.org actually stands on - every host below is a signed observation

dupageco.org

A / AAAA

75.2.20.73

unattributedserves the site

cmtu.mt.ns.els-gms.att.netcbru.br.ns.els-gms.att.net

att.netanswers its DNS

alt2.us.email.fireeyecloud.comalt3.us.email.fireeyecloud.comdupageco-org.mail.protection.outlook.comprimary.us.email.fireeyecloud.com+1 more

Microsoft 365receives its email

TLS

ssl8.revizesites.com

Let's Encryptissued its certificate

DNS Records

A 1

75.2.20.73

MX 5

30alt2.us.email.fireeyecloud.com
40alt3.us.email.fireeyecloud.com
50dupageco-org.mail.protection.outlook.com
10primary.us.email.fireeyecloud.com
20alt1.us.email.fireeyecloud.com

TXT 8

MS=ms46410564
Jz2GG0HvkqgDRKfpKMdtibvdtQT0/pMiBCZjNA1sECzEXu/e24xiU0JH05DBhLsskuDxLDKzzV57sHvX5mTPZg==
adobe-idp-site-verification=3c15c75c8e667c6c807ccb19ecb8eec4f519006aa0c45845cfe31b4732a41c4e
adobe-sign-verification=6207809db5d356115d4036ca3530b142
apple-domain-verification=3sMNjsIRuOEjcp3V
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
v=msv1 t=5C8DCD43-0546-4FB4-99C0-F774FD7ADCA9
v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email

NS 2

cmtu.mt.ns.els-gms.att.net
cbru.br.ns.els-gms.att.net

SOA 1

cbru.br.ns.els-gms.att.net rm-hostmaster.ems.att.com

TLS Certificates (3)

Common Name	Issuer	Expires
`ssl8.revizesites.com`	C=US, O=Let's Encrypt, CN=YR2	Wed, 02 Sep 2026 14:58:58 +0000
`YR2`	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.dupageco.org

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 dupageco.org. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_dc87d6e2555425d6
Output Hash: e5446ec78e23b533fcaf200cd30a7f2e5ef65490961dcc790f570b37f4dc4e12
Signature: ed25519:7b4973ae7044319aea41073de52b862d4f3933b4a0aa9c48154443e889deb1c4a8fca58b96445ead39b60d809db91987b6b870641a215c4c46eb82df00d32000
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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Permalink: https://domaindrift.io/t/dupageco.org