asn.dev

Autonomous system

AS46286 COOK-COUNTY

Unclassified ARIN

IPv4 addresses 2.05K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Cook County

United States of America · AI-generated

government municipal network

COOK-COUNTY is operated by Cook County, the government of the second-most populous county in the United States, located in Illinois.

What it's used for

  • The address space carries municipal government infrastructure, evidenced by the netname CCWAN and reverse DNS records pointing to cookcountyil.gov.
  • The AS announces 2048 IPv4 addresses across 3 prefixes with 3 observed neighbours, indicating a small, self-contained internal network rather than a transit or large-scale access provider.
  • Traffic from this AS consists of administrative and operational data for county offices and services, including the central offices located in Chicago.

Notable

  • Registrants are mixed: the largest prefix 162.217.184.0/22 is registered to Cook County, while 12.218.238.0/23 is registered to AT&T Enterprises, LLC and 66.99.240.0/23 to Illinois Century Network.
  • The inventory is a small, subdivided estate typical of a large municipal entity managing its own internal connectivity.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6325Illinois Century Network259
AS15042Urban Communications, Inc.104
AS7018AT&T Enterprises, LLC58

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 3 prefixes · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS46286
Registry name
COOK-COUNTY
Registrant
Cook County
Abuse contact
NCC@cookcountyil.gov
Registered
2008-08-01
Last changed
2008-08-01
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
86% valid · 6 valid, 1 with no ROA
ROAs
6 authorising AS46286
ASPA
no ASPA record
IRR
86% registered · 6 of 7 announcements
Route objects
11 naming AS46286

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,783 prefixes, as published 2026-10-17. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check