chicago.gov

Observed Jul 18, 2026, 12:08 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

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

23.53.35.7623.53.35.69

Akamai International B.Vserves the site

a5-64.akam.neta1-221.akam.neta7-66.akam.neta10-67.akam.net+2 more

akam.netanswers its DNS

mxa-00007602.gslb.pphosted.commxb-00007602.gslb.pphosted.com

Proofpointreceives its email

TLS

chicago.gov

Let's Encryptissued its certificate

DNS Records

A 2

23.53.35.76
23.53.35.69

MX 2

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

TXT 15

v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
85w5z25crvphg4dpjq0bz5fh53h11jcg
579v9hr0hdh7v932mt8dwwt55q6ymlnc
0b707ad0-73ae-4434-80bf-65a6948f6d34
dmihvhinchijo6ic53rb02og0e
SFMC-OcWi8y8SNnsd-nJoFpmONVETbSkGeZF2XLzQrGjj
5u6ubqq2girv6dlksvpf0kq5l3
MS=ms81503507
google-site-verification=amjaG7PNu5f0fG_NJZ8bMhdyxo0qLh82bc_YhY1vErI
00Dt0000000GzVZ=1TBcs0000000CxI

NS 6

a5-64.akam.net
a1-221.akam.net
a7-66.akam.net
a10-67.akam.net
a22-65.akam.net
a4-65.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: 9389b678-87af-47d4-8fcd-9c62982c0b32
Output Hash: 6ddf326fda509429137785b6b0cd1d9e56bd4be1910ad93cd36e9999823db055
Signature: ed25519:0460c6c99204d3841f4be0ecc327fa0568678ea164fa30cfa683e432617ef22e4b89404ea38079450b1c69aded367c01a5586d6178a0aa9f8b7594c139695c05
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/chicago.gov