Report for 400537

Name

AS-CHI-AURORA - Morningstar, Inc., 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.

400537 AS-CHI-AURORA, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS62            CONE, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
32571 AS400537       ORIGIN  Originate:       1536 /21.42  Transit:          0 /0.00  AS-CHI-AURORA, 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       %
20358 AS400537      AS-CHI-AURORA, US                                  4      4      2      2      2  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  206.220.18.0/23      3257 62 400537       + Announce - aggregate of 206.220.18.0/24 (3257 62 400537) and 206.220.19.0/24 (3257 62 400537)
  206.220.18.0/24      3257 62 400537       - Withdrawn - aggregated with 206.220.19.0/24 (3257 62 400537)
  206.220.19.0/24      3257 62 400537       - Withdrawn - aggregated with 206.220.18.0/24 (3257 62 400537)
  216.228.224.0/22     3257 62 400537       + Announce - aggregate of 216.228.224.0/23 (3257 62 400537) and 216.228.226.0/23 (3257 62 400537)
  216.228.224.0/23     3257 62 400537       - Withdrawn - aggregated with 216.228.226.0/23 (3257 62 400537)
  216.228.226.0/23     3257 62 400537       - Withdrawn - aggregated with 216.228.224.0/23 (3257 62 400537)

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

AS400537   4 More Specifics   4 Total Advertisements   AS-CHI-AURORA, US
    206.220.18.0/24               206.220.16.0/22
    206.220.19.0/24               206.220.16.0/22
    216.228.224.0/23              216.228.224.0/20
    216.228.226.0/23              216.228.224.0/20

Whois Entry

whois: 402590

IANA has recorded AS400537 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS400537\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:       400537
             ASName:         AS-CHI-AURORA
             ASHandle:       AS400537
             RegDate:        2022-03-17
             Updated:        2022-03-17
             Ref:            https://rdap.arin.net/registry/autnum/400537
             
             
             OrgName:        Morningstar, Inc.
             OrgId:          MORNIN
             Address:        22 W. Washington Street 
             City:           Chicago
             StateProv:      IL
             PostalCode:     60602
             Country:        US
             RegDate:        1997-01-07
             Updated:        2009-06-25
             Ref:            https://rdap.arin.net/registry/entity/MORNIN
             
             
             OrgAbuseHandle: DOMAI126-ARIN
             OrgAbuseName:   Domain Admin
             OrgAbusePhone:  +1-312-696-6000 
             OrgAbuseEmail:  domainadmin@morningstar.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DOMAI126-ARIN
             
             OrgTechHandle: DOMAI126-ARIN
             OrgTechName:   Domain Admin
             OrgTechPhone:  +1-312-696-6000 
             OrgTechEmail:  domainadmin@morningstar.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/DOMAI126-ARIN
             
             OrgNOCHandle: DOMAI126-ARIN
             OrgNOCName:   Domain Admin
             OrgNOCPhone:  +1-312-696-6000 
             OrgNOCEmail:  domainadmin@morningstar.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/DOMAI126-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.
             #