dupagecounty.gov
Observed Jul 25, 2026, 00:03 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.
Up right now
Email byMicrosoft 365
Secured byLet's Encrypt
Also usesGoogle Search Console
2 subdomains · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat dupagecounty.gov actually stands on - every host below is a signed observation
dupagecounty.gov
A / AAAA
75.2.20.73
unattributedserves the site
NS
cbru.br.ns.els-gms.att.netcmtu.mt.ns.els-gms.att.net
att.netanswers its DNS
MX
alt3.us.email.fireeyecloud.comdupagecounty-gov.mail.protection.outlook.comprimary.us.email.fireeyecloud.comalt1.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
30alt3.us.email.fireeyecloud.com40dupagecounty-gov.mail.protection.outlook.com0primary.us.email.fireeyecloud.com10alt1.us.email.fireeyecloud.com20alt2.us.email.fireeyecloud.com
TXT 8
MS=ms14240378google-site-verification=rjSx_H8S-cz1KToVIbafaW8BMhEP0KLhdJQgdcYBRUAadobe-idp-site-verification=3c15c75c8e667c6c807ccb19ecb8eec4f519006aa0c45845cfe31b4732a41c4eknowbe4-site-verification=3b41615c5bdbb731f3156876a53af465box-domain-verification=53828220a25fc824486468a4c36b196ca36503299e743287919002d4098e7ca0zoho-verification=zb56955951.zmverify.zoho.comv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:spf.protection.outlook.com ~allv=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email
NS 2
cbru.br.ns.els-gms.att.netcmtu.mt.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 (2)
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 receiptEd25519 Receipt
- Receipt ID
rcpt_54ca84456ee0c250- Output Hash
eaee2c02fb7546dd1344e4e2616a9c0f91a4f706c63a50ebe86343d9d7be80fe- Signature
ed25519:84f3e14c3ca992f3de375746e16aea46f8a9d7ce4f564513a67426f313900ef4aae5651fd6ff532b6b858e29795b1ee7b441d1f32349b82d8077181b1722c600- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast