chicago.gov

Observed Jul 21, 2026, 19:17 UTC (19h 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

Guarded by a firewall

Runs onAkamai International B.V

Email byProofpoint

Secured byLet's Encrypt

Also usesGoogle Search Console

18 subdomains · government_expanded

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

INFRASTRUCTURE MAPwhat chicago.gov actually stands on - every host below is a signed observation

chicago.gov

A / AAAA

23.205.105.2723.205.105.47

Akamai International B.Vserves the site

a10-67.akam.neta7-66.akam.neta5-64.akam.neta4-65.akam.net+2 more

akam.netanswers its DNS

mxb-00007602.gslb.pphosted.commxa-00007602.gslb.pphosted.com

Proofpointreceives its email

TLS

chicago.gov

Let's Encryptissued its certificate

DNS Records

A 2

23.205.105.27
23.205.105.47

MX 2

10mxb-00007602.gslb.pphosted.com
10mxa-00007602.gslb.pphosted.com

TXT 15

SFMC-OcWi8y8SNnsd-nJoFpmONVETbSkGeZF2XLzQrGjj
00Dt0000000GzVZ=1TBcs0000000CxI
apple-domain-verification=Knl0R5DTmfgCYjzl
box-domain-verification=188111060f479b86e79253857ac75a5e8db9a18a2839cbd7bcb0b6865aebe52c
85w5z25crvphg4dpjq0bz5fh53h11jcg
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
579v9hr0hdh7v932mt8dwwt55q6ymlnc
secureframe-domain-verification-9t8vjx=TCIm0i0wCuNcKJa76BwMvUss5
globalsign-domain-verification=8EB4C6EEB9738BA54007927860E5A653
dmihvhinchijo6ic53rb02og0e

NS 6

a10-67.akam.net
a7-66.akam.net
a5-64.akam.net
a4-65.akam.net
a1-221.akam.net
a22-65.akam.net

SOA 1

a1-221.akam.net hostmaster.cityofchicago.org

TLS Certificates (3)

Common Name	Issuer	Expires
`chicago.gov`	C=US, O=Let's Encrypt, CN=YR1	Sun, 30 Aug 2026 19:05:34 +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 (18)

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 chicago.gov. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_360371cbe8f3feb3
Output Hash: 90eeeed4d6c1b418f8ea70240bb494ce2eb941ee1cd00d93669be65a64ec8456
Signature: ed25519:658ad9012282485cc134de262ea8cb72049c3f39363eb30ebee316dfebcaef3f452c61c4440e9b2ba9ce9177ea978d7bc37c51c4a2ba2dd89b63ead50060d20f
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

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