Report for 21666

Name

OSF-ASN-01 - OSF Healthcare System, 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.

21666 OSF-ASN-01, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS174           COGENT-174, US
    AS6461          ZAYO-6461, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
35608 AS21666        ORIGIN  Originate:       1024 /22.00  Transit:          0 /0.00  OSF-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       %
36089 AS21666       OSF-ASN-01, US                                     4      0      0      4      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  38.65.207.0/24       2497 174 21666         
  38.131.231.0/24      2497 174 21666         
  198.246.176.0/24     2497 174 21666         
  204.238.189.0/24     2497 6461 21666        

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

AS21666   2 More Specifics   4 Total Advertisements   OSF-ASN-01, US
    38.65.207.0/24                38.0.0.0/8
    38.131.231.0/24               38.0.0.0/8

Whois Entry

whois: 402603

IANA has recorded AS21666 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21666\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:       21666
             ASName:         OSF-ASN-01
             ASHandle:       AS21666
             RegDate:        2022-08-30
             Updated:        2022-08-30
             Ref:            https://rdap.arin.net/registry/autnum/21666
             
             
             OrgName:        OSF Healthcare System
             OrgId:          OHS-2
             Address:        124 SW Adams St
             City:           Peoria
             StateProv:      IL
             PostalCode:     61602
             Country:        US
             RegDate:        1995-05-26
             Updated:        2022-12-09
             Ref:            https://rdap.arin.net/registry/entity/OHS-2
             
             
             OrgAbuseHandle: NETWO5372-ARIN
             OrgAbuseName:   Network Administration
             OrgAbusePhone:  +1-309-655-2000 
             OrgAbuseEmail:  dnsadmin@osfhealthcare.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO5372-ARIN
             
             OrgTechHandle: NETWO5372-ARIN
             OrgTechName:   Network Administration
             OrgTechPhone:  +1-309-655-2000 
             OrgTechEmail:  dnsadmin@osfhealthcare.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO5372-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.
             #