Report for 6325

Name

ILLINOIS-CENTURY - Illinois Century Network, 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.

6325 ILLINOIS-CENTURY, US

  Adjacency:    48  Upstream:     7  Downstream:    41
  Upstream Adjacent AS list
    AS293           ESNET, US
    AS6939          HURRICANE, US
    AS174           COGENT-174, US
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK, US
    AS7018          ATT-INTERNET4, US
    AS6461          ZAYO-6461, US
    AS22335         MREN, US
  Downstream Adjacent AS list
    AS40710         CLC-98-ILLINOIS, US
    AS53695         SIUE, US
    AS22272         -Reserved AS-, ZZ
    AS10308         NEIUNET, US
    AS1702          CCHICAGO-STATE-UNIVERSITY, US
    AS15337         WRHARPER, US
    AS1416          CHICAGO-PUBLIC-SCHOOLS, US
    AS22666         GBHSD, US
    AS23427         GLENBARD-HSD87, US
    AS26255         OAKTONCOMMUNITYCOLLEGE, US
    AS26367         BRADLEY-UNIVERSITY, US
    AS32294         CITY-OF-CHAMPAIGN-IL, US
    AS32344         CSD99, US
    AS394026        VOS-ASN1, US
    AS32464         UICOMP-AS, US
    AS29993         NCC-23-ASN, US
    AS394798        CPD-AS, US
    AS395433        D214, US
    AS395068        MCHENRYCOUNTYCOLLEGEASN, US
    AS394031        SOUTHSUBURBANCOLLEGEOFCOOKCOUNTY, US
    AS53643         MCUSDN-INET, US
    AS53642         CCUSD-301, US
    AS7386          ILLINOIS-STATE-UNIV, US
    AS6200          UIC-AS, US
    AS19480         CPL, US
    AS11417         NIU, US
    AS395847        -Reserved AS-, ZZ
    AS17196         COD-GE-IL, US
    AS22887         WIU-AS, US
    AS33019         WHEATONCOLLEGE, US
    AS394241        CUSD186, US
    AS33460         WAUBONSEE-COMMUNITY-COLLEGE, US
    AS394534        CITYOFCHICAGO-ASN-01, US
    AS29885         UCHHS-AS, US
    AS397112        ILLINOIS-MATH-SCIENCE, US
    AS22978         GSU, US
    AS19070         EIUNET, US
    AS15118         SIU-BB-2, US
    AS63056         HOOPESTON-AREA-SCHOOLS, US
    AS46286         COOK-COUNTY, US
    AS40038         MORAINEVALLEY-NET, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
298   AS6325         ORG+TRN Originate:    1722624 /11.28  Transit:     393472 /13.41 ILLINOIS-CENTURY, 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       %
 1658 AS6325        ILLINOIS-CENTURY, US                              75     40      5     40     35  46.67%


  Prefix               AS Path                              Aggregation Suggestion
  64.107.0.0/16        6939 6325              
  64.107.0.0/16        2497 174 6325        + Announce - aggregate of 64.107.0.0/17 (2497 174 6325) and 64.107.128.0/17 (2497 174 6325)
  64.107.0.0/17        2497 174 6325        - Withdrawn - aggregated with 64.107.128.0/17 (2497 174 6325)
  64.107.0.0/18        2497 174 6325        - Withdrawn - matching aggregate 64.107.0.0/17 2497 174 6325
  64.107.64.0/18       2497 174 6325        - Withdrawn - matching aggregate 64.107.0.0/17 2497 174 6325
  64.107.128.0/17      2497 174 6325        - Withdrawn - aggregated with 64.107.0.0/17 (2497 174 6325)
  64.107.128.0/18      2497 174 6325        - Withdrawn - matching aggregate 64.107.128.0/17 2497 174 6325
  64.107.192.0/18      2497 174 6325        - Withdrawn - matching aggregate 64.107.128.0/17 2497 174 6325
  64.150.0.0/17        2497 174 6325          
  65.79.0.0/17         2497 174 6325          
  66.99.0.0/16         6939 6325              
  66.99.0.0/17         6939 6325            - Withdrawn - matching aggregate 66.99.0.0/16 6939 6325
  66.99.0.0/18         6939 6325            - Withdrawn - matching aggregate 66.99.0.0/16 6939 6325
  66.99.51.0/24        3303 174 6325          
  66.99.64.0/18        2497 174 6325          
  66.99.128.0/17       2497 174 6325          
  66.99.128.0/18       2497 174 6325        - Withdrawn - matching aggregate 66.99.128.0/17 2497 174 6325
  66.99.192.0/18       2497 174 6325        - Withdrawn - matching aggregate 66.99.128.0/17 2497 174 6325
  66.158.0.0/17        2497 174 6325          
  66.158.15.0/24       2497 32787 6325        
  72.3.0.0/17          2497 174 6325          
  136.144.0.0/20       6939 6325              
  163.191.0.0/16       6939 6325            + Announce - aggregate of 163.191.0.0/17 (6939 6325) and 163.191.128.0/17 (6939 6325)
  163.191.0.0/17       6939 6325            - Withdrawn - aggregated with 163.191.128.0/17 (6939 6325)
  163.191.0.0/21       2497 32787 6325        
  163.191.8.0/22       2497 32787 6325        
  163.191.12.0/23      2497 32787 6325        
  163.191.14.0/24      2497 32787 6325        
  163.191.128.0/17     6939 6325            - Withdrawn - aggregated with 163.191.0.0/17 (6939 6325)
  163.191.162.0/23     2497 32787 6325        
  163.191.164.0/22     2497 32787 6325        
  163.191.168.0/21     2497 32787 6325        
  163.191.176.0/21     2497 32787 6325        
  163.191.184.0/22     2497 32787 6325        
  163.191.188.0/23     2497 32787 6325        
  163.191.192.0/18     2497 32787 6325      + Announce - aggregate of 163.191.192.0/19 (2497 32787 6325) and 163.191.224.0/19 (2497 32787 6325)
  163.191.192.0/19     2497 32787 6325      - Withdrawn - aggregated with 163.191.224.0/19 (2497 32787 6325)
  163.191.224.0/19     2497 32787 6325      - Withdrawn - aggregated with 163.191.192.0/19 (2497 32787 6325)
  206.166.0.0/17       2497 174 6325          
  206.166.0.0/18       2497 174 6325        - Withdrawn - matching aggregate 206.166.0.0/17 2497 174 6325
  206.166.64.0/18      2497 174 6325        - Withdrawn - matching aggregate 206.166.0.0/17 2497 174 6325
  207.63.0.0/16        6939 6325              
  207.63.0.0/16        2497 174 6325        + Announce - aggregate of 207.63.0.0/17 (2497 174 6325) and 207.63.128.0/17 (2497 174 6325)
  207.63.0.0/17        2497 174 6325        - Withdrawn - aggregated with 207.63.128.0/17 (2497 174 6325)
  207.63.0.0/18        2497 174 6325        - Withdrawn - matching aggregate 207.63.0.0/17 2497 174 6325
  207.63.64.0/18       2497 174 6325        - Withdrawn - matching aggregate 207.63.0.0/17 2497 174 6325
  207.63.128.0/17      2497 174 6325        - Withdrawn - aggregated with 207.63.0.0/17 (2497 174 6325)
  207.63.128.0/18      2497 174 6325        - Withdrawn - matching aggregate 207.63.128.0/17 2497 174 6325
  207.63.192.0/18      2497 174 6325        - Withdrawn - matching aggregate 207.63.128.0/17 2497 174 6325
  209.7.0.0/16         6939 6325              
  209.7.0.0/17         6939 6325            - Withdrawn - matching aggregate 209.7.0.0/16 6939 6325
  209.7.0.0/18         2497 174 6325          
  209.7.64.0/18        6939 6325            - Withdrawn - matching aggregate 209.7.0.0/16 6939 6325
  209.7.128.0/17       6939 6325            - Withdrawn - matching aggregate 209.7.0.0/16 6939 6325
  209.7.128.0/18       2497 174 6325          
  209.7.192.0/18       6939 6325            - Withdrawn - matching aggregate 209.7.0.0/16 6939 6325
  209.174.0.0/16       6939 6325              
  209.174.0.0/17       2497 174 6325          
  209.174.66.0/23      3303 174 6325          
  209.174.128.0/17     6939 6325            - Withdrawn - matching aggregate 209.174.0.0/16 6939 6325
  209.175.0.0/16       2497 174 6325          
  209.175.0.0/17       2497 174 6325        - Withdrawn - matching aggregate 209.175.0.0/16 2497 174 6325
  209.175.0.0/18       2497 174 6325        - Withdrawn - matching aggregate 209.175.0.0/16 2497 174 6325
  209.175.17.0/24      2914 6461 6325         
  209.175.64.0/18      2497 174 6325        - Withdrawn - matching aggregate 209.175.0.0/16 2497 174 6325
  209.175.96.0/24      2497 6461 6325         
  209.175.128.0/17     2497 174 6325        - Withdrawn - matching aggregate 209.175.0.0/16 2497 174 6325
  209.175.128.0/18     2497 174 6325        - Withdrawn - matching aggregate 209.175.0.0/16 2497 174 6325
  209.175.192.0/18     2497 174 6325        - Withdrawn - matching aggregate 209.175.0.0/16 2497 174 6325
  216.124.0.0/15       6939 6325            + Announce - aggregate of 216.124.0.0/16 (6939 6325) and 216.125.0.0/16 (6939 6325)
  216.124.0.0/16       6939 6325            - Withdrawn - aggregated with 216.125.0.0/16 (6939 6325)
  216.124.0.0/17       2497 174 6325          
  216.124.128.0/17     6939 6325            - Withdrawn - matching aggregate 216.124.0.0/16 6939 6325
  216.124.128.0/18     6939 6325            - Withdrawn - matching aggregate 216.124.0.0/16 6939 6325
  216.124.192.0/18     6939 6325            - Withdrawn - matching aggregate 216.124.0.0/16 6939 6325
  216.125.0.0/16       6939 6325            - Withdrawn - aggregated with 216.124.0.0/16 (6939 6325)
  216.125.0.0/17       2497 174 6325          
  216.125.32.0/21      3303 174 6325          
  216.125.128.0/17     6939 6325            - Withdrawn - matching aggregate 216.125.0.0/16 6939 6325
  216.125.192.0/18     6939 6325            - Withdrawn - matching aggregate 216.125.0.0/16 6939 6325

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

AS6325   77 More Specifics   89 Total Advertisements   ILLINOIS-CENTURY, US
    64.107.0.0/17                 64.107.0.0/16
    64.107.0.0/18                 64.107.0.0/16
    64.107.64.0/18                64.107.0.0/16
    64.107.128.0/17               64.107.0.0/16
    64.107.128.0/18               64.107.0.0/16
    64.107.167.0/24               64.107.0.0/16
    64.107.192.0/18               64.107.0.0/16
    66.99.0.0/17                  66.99.0.0/16
    66.99.0.0/18                  66.99.0.0/16
    66.99.64.0/18                 66.99.0.0/16
    66.99.97.0/24                 66.99.0.0/16
    66.99.128.0/17                66.99.0.0/16
    66.99.128.0/18                66.99.0.0/16
    66.99.192.0/18                66.99.0.0/16
    66.99.209.0/24                66.99.0.0/16
    66.158.0.0/19                 66.158.0.0/17
    66.158.38.0/24                66.158.0.0/17
    66.158.104.0/24               66.158.0.0/17
    163.191.0.0/19                163.191.0.0/16
    163.191.32.0/19               163.191.0.0/16
    163.191.64.0/19               163.191.0.0/16
    163.191.96.0/19               163.191.0.0/16
    163.191.128.0/19              163.191.0.0/16
    163.191.160.0/19              163.191.0.0/16
    163.191.192.0/19              163.191.0.0/16
    163.191.224.0/19              163.191.0.0/16
    206.166.0.0/18                206.166.0.0/17
    206.166.64.0/18               206.166.0.0/17
    207.63.0.0/17                 207.63.0.0/16
    207.63.0.0/18                 207.63.0.0/16
    207.63.64.0/18                207.63.0.0/16
    207.63.124.0/24               207.63.0.0/16
    207.63.128.0/17               207.63.0.0/16
    207.63.128.0/18               207.63.0.0/16
    207.63.140.0/24               207.63.0.0/16
    207.63.175.0/24               207.63.0.0/16
    207.63.176.0/24               207.63.0.0/16
    207.63.183.0/24               207.63.0.0/16
    207.63.184.0/24               207.63.0.0/16
    207.63.186.0/23               207.63.0.0/16
    207.63.192.0/18               207.63.0.0/16
    209.7.0.0/17                  209.7.0.0/16
    209.7.0.0/18                  209.7.0.0/16
    209.7.64.0/18                 209.7.0.0/16
    209.7.65.0/24                 209.7.0.0/16
    209.7.66.0/24                 209.7.0.0/16
    209.7.128.0/17                209.7.0.0/16
    209.7.128.0/18                209.7.0.0/16
    209.7.177.0/24                209.7.0.0/16
    209.7.192.0/18                209.7.0.0/16
    209.7.240.0/24                209.7.0.0/16
    209.7.241.0/24                209.7.0.0/16
    209.7.244.0/22                209.7.0.0/16
    209.7.248.0/24                209.7.0.0/16
    209.7.250.0/24                209.7.0.0/16
    209.174.0.0/16                209.174.0.0/15
    209.174.0.0/17                209.174.0.0/15
    209.174.66.0/23               209.174.0.0/15
    209.174.128.0/17              209.174.0.0/15
    209.175.0.0/16                209.174.0.0/15
    209.175.0.0/17                209.174.0.0/15
    209.175.0.0/18                209.174.0.0/15
    209.175.64.0/18               209.174.0.0/15
    209.175.96.0/24               209.174.0.0/15
    209.175.128.0/17              209.174.0.0/15
    209.175.128.0/18              209.174.0.0/15
    209.175.192.0/18              209.174.0.0/15
    216.124.0.0/16                216.124.0.0/15
    216.124.0.0/17                216.124.0.0/15
    216.124.128.0/17              216.124.0.0/15
    216.124.128.0/18              216.124.0.0/15
    216.124.192.0/18              216.124.0.0/15
    216.125.0.0/16                216.124.0.0/15
    216.125.0.0/17                216.124.0.0/15
    216.125.32.0/21               216.124.0.0/15
    216.125.128.0/17              216.124.0.0/15
    216.125.192.0/18              216.124.0.0/15
    209.7.101.0/24                209.7.0.0/16
    209.7.240.0/21                209.7.0.0/16
    209.7.248.0/22                209.7.0.0/16
    216.125.56.0/24               216.124.0.0/15

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

    + 66.158.0.0/19               Announced
    + 207.63.124.0/24             Announced
    - 209.7.101.0/24              Withdrawn
    - 209.7.240.0/21              Withdrawn
    - 209.7.248.0/22              Withdrawn
    - 216.125.56.0/24             Withdrawn

Bogus ASes Announced by this AS

Bogus AS		Announcing-AS
AS22272	Announced by	AS6325	ILLINOIS-CENTURY - Illinois Century Network, US

Whois Entry

whois: 402609

IANA has recorded AS6325 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS6325\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:       6325
             ASName:         ILLINOIS-CENTURY
             ASHandle:       AS6325
             RegDate:        2001-10-31
             Updated:        2015-11-16
             Ref:            https://rdap.arin.net/registry/autnum/6325
             
             
             OrgName:        Illinois Century Network
             OrgId:          ILTN
             Address:        120 W Jefferson
             Address:        Suite B
             City:           Springfield
             StateProv:      IL
             PostalCode:     62702
             Country:        US
             RegDate:        
             Updated:        2025-09-24
             Ref:            https://rdap.arin.net/registry/entity/ILTN
             
             ReferralServer:  rwhois://rwhois.illinois.net:4321
             
             OrgAbuseHandle: ICNAB-ARIN
             OrgAbuseName:   ICN Abuse
             OrgAbusePhone:  +1-217-524-3648 
             OrgAbuseEmail:  doit.security@illinois.gov
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ICNAB-ARIN
             
             OrgTechHandle: WEBST193-ARIN
             OrgTechName:   Webster, Andrew 
             OrgTechPhone:  +1-217-558-1106 
             OrgTechEmail:  andy.webster@illinois.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/WEBST193-ARIN
             
             OrgTechHandle: RESER5-ARIN
             OrgTechName:   Reserva, Chuck 
             OrgTechPhone:  +1-217-786-8872 
             OrgTechEmail:  chuck.reserva@illinois.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/RESER5-ARIN
             
             OrgTechHandle: ZI83-ARIN
             OrgTechName:   Hostmaster
             OrgTechPhone:  +1-779-801-4071 
             OrgTechEmail:  DoIT.ICN.Hostmasternet@illinois.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZI83-ARIN
             
             RTechHandle: ZI83-ARIN
             RTechName:   Hostmaster
             RTechPhone:  +1-779-801-4071 
             RTechEmail:  DoIT.ICN.Hostmasternet@illinois.gov
             RTechRef:    https://rdap.arin.net/registry/entity/ZI83-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