Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS46286

Announcement observedARIN

Cook County · COOK-COUNTY

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/4/2026, 02:15:28Snapshot expired

View network topology RDAP registration

ASN: AS46286
Registration country: United States
Name: Cook County
Abbreviation: COOK-COUNTY
Registration date: 8/1/2008, 21:28:19
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
12.218.238.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 16:00:00	10/3/2026, 16:00:00	✓	×	Currently valid
162.217.184.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 16:00:00	10/3/2026, 16:00:00	✓	×	Currently valid
162.217.184.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 16:00:00	10/3/2026, 16:00:00	✓	×	Currently valid
162.217.185.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 16:00:00	10/3/2026, 16:00:00	✓	×	Currently valid
162.217.186.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 16:00:00	10/3/2026, 16:00:00	✓	×	Currently valid
162.217.187.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 16:00:00	10/3/2026, 16:00:00	✓	×	Currently valid
66.99.240.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 16:00:00	10/3/2026, 16:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: Cook County
RIR: ARIN
Registration country: United States
Registration date: 8/1/2008, 21:28:19
Abuse contact: NCC@cookcountyil.gov

Snapshot trend

10/4/2026, 02:15:287 v40 v63 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn