Report for 46286

Name

COOK-COUNTY - Cook County, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

46286 COOK-COUNTY - Cook County, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS6325          ILLINOIS-CENTURY - Illinois Century Network, US
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS15042         URBN - Urban Communications, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
19973 AS46286        ORIGIN  Originate:       3072 /20.42  Transit:          0 /0.00  COOK-COUNTY - Cook County, US

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
16992 AS46286       COOK-COUNTY - Cook County, US                      7      2      0      5      2  28.57%


  Prefix               AS Path                              Aggregation Suggestion
  12.218.238.0/23      4777 2497 7018 46286   
  66.99.240.0/23       4777 2497 174 6325 46286   
  162.217.184.0/22     4777 2497 174 6325 46286   
  162.217.184.0/24     4777 2497 174 6325 46286 - Withdrawn - matching aggregate 162.217.184.0/22 4777 2497 174 6325 46286
  162.217.185.0/24     4777 2516 3257 15042 46286   
  162.217.186.0/24     4777 2497 174 6325 46286 - Withdrawn - matching aggregate 162.217.184.0/22 4777 2497 174 6325 46286
  162.217.187.0/24     4777 2516 3257 15042 46286   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS46286   6 More Specifics   7 Total Advertisements   COOK-COUNTY - Cook County, US
    12.218.238.0/23               12.0.0.0/8
    66.99.240.0/23                66.99.0.0/16
    162.217.184.0/24              162.217.184.0/22
    162.217.185.0/24              162.217.184.0/22
    162.217.186.0/24              162.217.184.0/22
    162.217.187.0/24              162.217.184.0/22

Whois Entry

whois: 402332

IANA has recorded AS46286 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS46286\n             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       46286
             ASName:         COOK-COUNTY
             ASHandle:       AS46286
             RegDate:        2008-08-01
             Updated:        2008-08-01
             Ref:            https://rdap.arin.net/registry/autnum/46286
             
             
             OrgName:        Cook County
             OrgId:          COOKC-2
             Address:        118 N Clark Street
             City:           Chicago
             StateProv:      IL
             PostalCode:     60602
             Country:        US
             RegDate:        2008-05-23
             Updated:        2016-04-21
             Ref:            https://rdap.arin.net/registry/entity/COOKC-2
             
             
             OrgTechHandle: NCCAD1-ARIN
             OrgTechName:   NCC Admin
             OrgTechPhone:  +1-312-603-9002 
             OrgTechEmail:  NCC@cookcountyil.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/NCCAD1-ARIN
             
             OrgNOCHandle: NCCAD1-ARIN
             OrgNOCName:   NCC Admin
             OrgNOCPhone:  +1-312-603-9002 
             OrgNOCEmail:  NCC@cookcountyil.gov
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NCCAD1-ARIN
             
             OrgAbuseHandle: NCCAD1-ARIN
             OrgAbuseName:   NCC Admin
             OrgAbusePhone:  +1-312-603-9002 
             OrgAbuseEmail:  NCC@cookcountyil.gov
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NCCAD1-ARIN
             
             RAbuseHandle: NCC29-ARIN
             RAbuseName:   Network Control Center
             RAbusePhone:  +1-312-603-0087 
             RAbuseEmail:  ddonelson@cookcountygov.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/NCC29-ARIN
             
             RTechHandle: NCC29-ARIN
             RTechName:   Network Control Center
             RTechPhone:  +1-312-603-0087 
             RTechEmail:  ddonelson@cookcountygov.com
             RTechRef:    https://rdap.arin.net/registry/entity/NCC29-ARIN
             
             RNOCHandle: NCC29-ARIN
             RNOCName:   Network Control Center
             RNOCPhone:  +1-312-603-0087 
             RNOCEmail:  ddonelson@cookcountygov.com
             RNOCRef:    https://rdap.arin.net/registry/entity/NCC29-ARIN
             
             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #