Report for 23427

Name

GLENBARD-HSD87 - Glenbard HSD #87, 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.

23427 GLENBARD-HSD87, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS6325          ILLINOIS-CENTURY, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
35664 AS23427        ORIGIN  Originate:       1024 /22.00  Transit:          0 /0.00  GLENBARD-HSD87, 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       %
36815 AS23427       GLENBARD-HSD87, US                                 1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  204.145.108.0/22     6939 6325 23427        

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

AS23427   4 More Specifics   5 Total Advertisements   GLENBARD-HSD87, US
    204.145.108.0/24              204.145.108.0/22
    204.145.109.0/24              204.145.108.0/22
    204.145.110.0/24              204.145.108.0/22
    204.145.111.0/24              204.145.108.0/22

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 204.145.108.0/24            Announced
    + 204.145.109.0/24            Announced
    + 204.145.110.0/24            Announced
    + 204.145.111.0/24            Announced

Whois Entry

whois: 402590

IANA has recorded AS23427 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS23427\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:       23427
             ASName:         GLENBARD-HSD87
             ASHandle:       AS23427
             RegDate:        2009-11-12
             Updated:        2012-02-24
             Comment:        DHAME1-ARIN
             Ref:            https://rdap.arin.net/registry/autnum/23427
             
             
             OrgName:        Glenbard HSD #87
             OrgId:          GLENB-3
             Address:        596 Crescent Blvd
             City:           Glen Ellyn
             StateProv:      IL
             PostalCode:     60137
             Country:        US
             RegDate:        2009-11-04
             Updated:        2009-11-05
             Ref:            https://rdap.arin.net/registry/entity/GLENB-3
             
             ReferralServer:  rwhois://rwhois.illinois.net:4321
             
             OrgNOCHandle: DHAME1-ARIN
             OrgNOCName:   Dhamers, Nate 
             OrgNOCPhone:  +1-630-469-9107 
             OrgNOCEmail:  Nate_Dhamers@glenbard.org
             OrgNOCRef:    https://rdap.arin.net/registry/entity/DHAME1-ARIN
             
             OrgTechHandle: DHAME1-ARIN
             OrgTechName:   Dhamers, Nate 
             OrgTechPhone:  +1-630-469-9107 
             OrgTechEmail:  Nate_Dhamers@glenbard.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/DHAME1-ARIN
             
             OrgAbuseHandle: DHAME1-ARIN
             OrgAbuseName:   Dhamers, Nate 
             OrgAbusePhone:  +1-630-469-9107 
             OrgAbuseEmail:  Nate_Dhamers@glenbard.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DHAME1-ARIN
             
             RAbuseHandle: DHAME1-ARIN
             RAbuseName:   Dhamers, Nate 
             RAbusePhone:  +1-630-469-9107 
             RAbuseEmail:  Nate_Dhamers@glenbard.org
             RAbuseRef:    https://rdap.arin.net/registry/entity/DHAME1-ARIN
             
             RNOCHandle: DHAME1-ARIN
             RNOCName:   Dhamers, Nate 
             RNOCPhone:  +1-630-469-9107 
             RNOCEmail:  Nate_Dhamers@glenbard.org
             RNOCRef:    https://rdap.arin.net/registry/entity/DHAME1-ARIN
             
             RTechHandle: DHAME1-ARIN
             RTechName:   Dhamers, Nate 
             RTechPhone:  +1-630-469-9107 
             RTechEmail:  Nate_Dhamers@glenbard.org
             RTechRef:    https://rdap.arin.net/registry/entity/DHAME1-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.
             #
             
             
             
             Found a referral to rwhois.illinois.net:4321.
             
             %rwhois V-1.5:003abf:00 rwhois (by Network Solutions, Inc. V-1.5.9.6)
             %error 230 No Objects Found