Report for 394534

Name

CITYOFCHICAGO-ASN-01 - City of Chicago, 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 AS6447) 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.

394534 CITYOFCHICAGO-ASN-01, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS6079          RCN-AS, US
    AS6325          ILLINOIS-CENTURY, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1794  AS394534       ORIGIN  Originate:     134400 /14.96  Transit:          0 /0.00  CITYOFCHICAGO-ASN-01, 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       %
 9703 AS394534      CITYOFCHICAGO-ASN-01, US                          11      6      1      6      5  45.45%


  Prefix               AS Path                              Aggregation Suggestion
  167.165.0.0/16       293 6079 394534 394534 394534 394534 394534 394534   
  167.165.0.0/16       2497 6461 6325 394534 + Announce - aggregate of 167.165.0.0/17 (2497 6461 6325 394534) and 167.165.128.0/17 (2497 6461 6325 394534)
  167.165.0.0/17       2497 6461 6325 394534 - Withdrawn - aggregated with 167.165.128.0/17 (2497 6461 6325 394534)
  167.165.128.0/17     2497 6461 6325 394534 - Withdrawn - aggregated with 167.165.0.0/17 (2497 6461 6325 394534)
  167.165.222.0/23     2497 6461 6325 394534 - Withdrawn - matching aggregate 167.165.128.0/17 2497 6461 6325 394534
  167.165.230.0/24     2497 6461 6325 394534 - Withdrawn - matching aggregate 167.165.128.0/17 2497 6461 6325 394534
  167.165.231.0/24     2914 6461 6325 394534   
  167.165.232.0/23     2497 6461 6325 394534 - Withdrawn - matching aggregate 167.165.128.0/17 2497 6461 6325 394534
  167.165.234.0/24     2914 6461 6325 394534   
  167.165.238.0/24     2497 6461 6325 394534 - Withdrawn - matching aggregate 167.165.128.0/17 2497 6461 6325 394534
  167.165.239.0/24     2914 6461 6325 394534   
  216.125.144.0/22     2497 174 6325 394534   

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

AS394534   11 More Specifics   12 Total Advertisements   CITYOFCHICAGO-ASN-01, US
    167.165.0.0/17                167.165.0.0/16
    167.165.128.0/17              167.165.0.0/16
    167.165.165.0/24              167.165.0.0/16
    167.165.222.0/23              167.165.0.0/16
    167.165.230.0/24              167.165.0.0/16
    167.165.231.0/24              167.165.0.0/16
    167.165.232.0/23              167.165.0.0/16
    167.165.234.0/24              167.165.0.0/16
    167.165.238.0/24              167.165.0.0/16
    167.165.239.0/24              167.165.0.0/16
    216.125.144.0/22              216.124.0.0/15

Whois Entry

whois: 402609

IANA has recorded AS394534 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS394534\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:       394534
             ASName:         CITYOFCHICAGO-ASN-01
             ASHandle:       AS394534
             RegDate:        2018-06-20
             Updated:        2019-06-27
             Comment:        www.chicago.gov
             Ref:            https://rdap.arin.net/registry/autnum/394534
             
             
             OrgName:        City of Chicago
             OrgId:          CCMIS
             Address:        333 S State St., - Suite LL-30
             City:           Chicago
             StateProv:      IL
             PostalCode:     60604
             Country:        US
             RegDate:        1993-08-18
             Updated:        2016-06-28
             Ref:            https://rdap.arin.net/registry/entity/CCMIS
             
             
             OrgTechHandle: KIRBY37-ARIN
             OrgTechName:   Kirby, Kevin 
             OrgTechPhone:  +1-312-744-2502 
             OrgTechEmail:  kevin.kirby@chicago.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/KIRBY37-ARIN
             
             OrgAbuseHandle: KIRBY37-ARIN
             OrgAbuseName:   Kirby, Kevin 
             OrgAbusePhone:  +1-312-744-2502 
             OrgAbuseEmail:  kevin.kirby@chicago.gov
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/KIRBY37-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.
             #