Report for 21645

Name

ADA-CHICAGO - American Dental Association, 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.

21645 ADA-CHICAGO, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS46887         CROWNCASTLE-AS46887, US
    AS10753         LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
59901 AS21645        ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  ADA-CHICAGO, 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       %
36086 AS21645       ADA-CHICAGO, US                                    1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  64.145.66.0/24       6939 3356 10753 21645   

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

AS21645   1 More Specifics   1 Total Advertisements   ADA-CHICAGO, US
    207.122.227.0/24              207.120.0.0/14

Whois Entry

whois: 402590

IANA has recorded AS21645 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21645\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:       21645
             ASName:         ADA-CHICAGO
             ASHandle:       AS21645
             RegDate:        2020-02-19
             Updated:        2020-02-19
             Ref:            https://rdap.arin.net/registry/autnum/21645
             
             
             OrgName:        American Dental Association
             OrgId:          ADA-4
             Address:        211 E. Chicago Avenue
             City:           Chicago
             StateProv:      IL
             PostalCode:     60611-2678
             Country:        US
             RegDate:        1997-01-15
             Updated:        2021-05-14
             Ref:            https://rdap.arin.net/registry/entity/ADA-4
             
             
             OrgTechHandle: TIEFE2-ARIN
             OrgTechName:   Tiefenthaler, Mike 
             OrgTechPhone:  +1-312-440-2500 
             OrgTechEmail:  tiefenthalerm@ada.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/TIEFE2-ARIN
             
             OrgAbuseHandle: OVALL12-ARIN
             OrgAbuseName:   Ovalle, Freddy 
             OrgAbusePhone:  +1-312-440-2500 
             OrgAbuseEmail:  ovallef@ada.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/OVALL12-ARIN
             
             OrgTechHandle: OVALL12-ARIN
             OrgTechName:   Ovalle, Freddy 
             OrgTechPhone:  +1-312-440-2500 
             OrgTechEmail:  ovallef@ada.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/OVALL12-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.
             #