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 AS2.0) 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 - Illinois Century Network, US

  Adjacency:    34  Upstream:     5  Downstream:    29
  Upstream Adjacent AS list
    AS6461          ZAYO-6461 - Zayo Bandwidth, US
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS22335         MREN - Metropolitan Research and Education Network, US
    AS174           COGENT-174 - Cogent Communications, LLC, US
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US
  Downstream Adjacent AS list
    AS17196         COD-GE-IL - College of duPage, US
    AS394241        CUSD186 - Murphysboro Community Unit School District No. 186, US
    AS29885         UCHHS-AS - Univeristy of Chicago Hospitals & Health System, US
    AS63056         HOOPESTON-AREA-SCHOOLS - Hoopeston Area Schools, US
    AS33019         WHEATONCOLLEGE - Wheaton College, US
    AS394026        VOS-ASN1 - Village of Schaumburg, US
    AS1702          CCHICAGO-STATE-UNIVERSITY - CHICAGO STATE UNIVERSITY, US
    AS22272         -Reserved AS-, ZZ
    AS394798        CPD-AS - Chicago Park District, US
    AS26255         OAKTONCOMMUNITYCOLLEGE - Oakton Community College, US
    AS22978         GSU - Governors State University, US
    AS11417         NIU - Northern Illinois University, US
    AS46286         COOK-COUNTY - Cook County, US
    AS53643         MCUSDN-INET - Manteno Community Unit School District 5, US
    AS395847        MTHSD207 - Maine Township High School District 207, US
    AS22666         GBHSD - Glenbrook High School District, US
    AS10308         NEIUNET - Northeastern Illinois University, US
    AS15337         WRHARPER - Wm. Rainey Harper College, US
    AS23427         GLENBARD-HSD87 - Glenbard HSD #87, US
    AS22887         WIU-AS - Western Illinois University, US
    AS19070         EIUNET - Eastern Illinois University, US
    AS15118         SIUMED - Southern Illinois University - School of Medicine, US
    AS1416          CHICAGO-PUBLIC-SCHOOLS - Chicago Public Schools, US
    AS394534        CITYOFCHICAGO-ASN-01 - City of Chicago, US
    AS395433        D214 - Township High School District 214, US
    AS33460         WAUBONSEE-COMMUNITY-COLLEGE - Waubonsee Community College, US
    AS397112        ILLINOIS-MATH-SCIENCE - Illinois Mathematics and Science Academy, US
    AS32344         CSD99 - Community High School District 99, US
    AS29993         NCC-23-ASN - North Central College, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
296   AS6325         ORG+TRN Originate:    1752576 /11.26  Transit:     395776 /13.41 ILLINOIS-CENTURY - Illinois Century Network, 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       %
 1310 AS6325        ILLINOIS-CENTURY - Illinois Century Network,      98     53      7     52     46  46.94%


  Prefix               AS Path                              Aggregation Suggestion
  64.107.0.0/16        4777 2516 174 6325     
  64.107.0.0/17        4777 2516 174 6325   - Withdrawn - matching aggregate 64.107.0.0/16 4777 2516 174 6325
  64.107.0.0/18        4777 2516 174 6325   - Withdrawn - matching aggregate 64.107.0.0/16 4777 2516 174 6325
  64.107.64.0/18       4777 2516 174 6325   - Withdrawn - matching aggregate 64.107.0.0/16 4777 2516 174 6325
  64.107.128.0/17      4777 2516 174 6325   - Withdrawn - matching aggregate 64.107.0.0/16 4777 2516 174 6325
  64.107.128.0/18      4777 2516 174 6325   - Withdrawn - matching aggregate 64.107.0.0/16 4777 2516 174 6325
  64.107.192.0/18      4777 2516 174 6325   - Withdrawn - matching aggregate 64.107.0.0/16 4777 2516 174 6325
  64.150.0.0/17        4777 2497 174 6325     
  65.79.0.0/17         4777 2516 174 6325     
  66.99.0.0/16         4777 2516 174 6325     
  66.99.0.0/17         4777 2516 174 6325   - Withdrawn - matching aggregate 66.99.0.0/16 4777 2516 174 6325
  66.99.0.0/18         4777 2516 174 6325   - Withdrawn - matching aggregate 66.99.0.0/16 4777 2516 174 6325
  66.99.51.0/24        4777 2516 174 6325   - Withdrawn - matching aggregate 66.99.0.0/16 4777 2516 174 6325
  66.99.64.0/18        4777 2516 174 6325   - Withdrawn - matching aggregate 66.99.0.0/16 4777 2516 174 6325
  66.99.97.0/24        4608 7575 6461 6325 6325 6325   
  66.99.128.0/17       4777 2516 174 6325   - Withdrawn - matching aggregate 66.99.0.0/16 4777 2516 174 6325
  66.99.128.0/18       4777 2516 174 6325   - Withdrawn - matching aggregate 66.99.0.0/16 4777 2516 174 6325
  66.99.192.0/18       4777 2516 174 6325   - Withdrawn - matching aggregate 66.99.0.0/16 4777 2516 174 6325
  66.99.209.0/24       4777 2497 7018 6325 6325   
  66.158.0.0/17        4777 2516 174 6325     
  66.158.104.0/24      4608 7575 6461 6325 6325 6325   
  72.3.0.0/17          4777 2497 174 6325     
  136.144.0.0/20       4777 2516 174 6325     
  163.191.0.0/16       4777 2516 174 6325   + Announce - aggregate of 163.191.0.0/17 (4777 2516 174 6325) and 163.191.128.0/17 (4777 2516 174 6325)
  163.191.0.0/17       4777 2516 174 6325   - Withdrawn - aggregated with 163.191.128.0/17 (4777 2516 174 6325)
  163.191.0.0/21       4777 32787 6325        
  163.191.8.0/22       4777 32787 6325        
  163.191.12.0/23      4777 32787 6325        
  163.191.14.0/24      4777 32787 6325        
  163.191.32.0/19      4777 32787 6325        
  163.191.64.0/19      4777 32787 6325        
  163.191.96.0/20      4777 32787 6325        
  163.191.112.0/21     4777 32787 6325        
  163.191.120.0/22     4777 32787 6325        
  163.191.124.0/23     4777 32787 6325      + Announce - aggregate of 163.191.124.0/24 (4777 32787 6325) and 163.191.125.0/24 (4777 32787 6325)
  163.191.124.0/24     4777 32787 6325      - Withdrawn - aggregated with 163.191.125.0/24 (4777 32787 6325)
  163.191.125.0/24     4777 32787 6325      - Withdrawn - aggregated with 163.191.124.0/24 (4777 32787 6325)
  163.191.126.0/24     4777 32787 6325        
  163.191.128.0/17     4777 2516 174 6325   - Withdrawn - aggregated with 163.191.0.0/17 (4777 2516 174 6325)
  163.191.162.0/23     4777 32787 6325        
  163.191.164.0/22     4777 32787 6325        
  163.191.168.0/21     4777 32787 6325        
  163.191.176.0/21     4777 32787 6325        
  163.191.184.0/22     4777 32787 6325        
  163.191.188.0/23     4777 32787 6325        
  163.191.192.0/18     4777 32787 6325      + Announce - aggregate of 163.191.192.0/19 (4777 32787 6325) and 163.191.224.0/19 (4777 32787 6325)
  163.191.192.0/19     4777 32787 6325      - Withdrawn - aggregated with 163.191.224.0/19 (4777 32787 6325)
  163.191.224.0/19     4777 32787 6325      - Withdrawn - aggregated with 163.191.192.0/19 (4777 32787 6325)
  192.77.125.0/24      4777 2497 7018 6325    
  206.166.0.0/17       4777 2497 174 6325     
  206.166.0.0/18       4777 2497 174 6325   - Withdrawn - matching aggregate 206.166.0.0/17 4777 2497 174 6325
  206.166.64.0/18      4777 2516 174 6325     
  207.63.0.0/16        4777 2516 174 6325     
  207.63.0.0/17        4777 2516 174 6325   - Withdrawn - matching aggregate 207.63.0.0/16 4777 2516 174 6325
  207.63.0.0/18        4777 2497 174 6325     
  207.63.64.0/18       4777 2516 174 6325   - Withdrawn - matching aggregate 207.63.0.0/16 4777 2516 174 6325
  207.63.128.0/17      4777 2497 174 6325     
  207.63.128.0/18      4777 2497 174 6325   - Withdrawn - matching aggregate 207.63.128.0/17 4777 2497 174 6325
  207.63.140.0/24      4777 2497 174 6325   - Withdrawn - matching aggregate 207.63.128.0/17 4777 2497 174 6325
  207.63.175.0/24      4777 2516 174 6325     
  207.63.176.0/24      4777 2516 174 6325     
  207.63.183.0/24      4777 2497 174 6325   - Withdrawn - matching aggregate 207.63.128.0/17 4777 2497 174 6325
  207.63.186.0/23      4777 2516 174 6325     
  207.63.192.0/18      4777 2497 174 6325   - Withdrawn - matching aggregate 207.63.128.0/17 4777 2497 174 6325
  207.63.195.0/24      4777 2497 174 6325   - Withdrawn - matching aggregate 207.63.128.0/17 4777 2497 174 6325
  209.7.0.0/16         4777 2497 174 6325     
  209.7.0.0/17         4777 2497 174 6325   - Withdrawn - matching aggregate 209.7.0.0/16 4777 2497 174 6325
  209.7.0.0/16         4777 2516 174 6325   + Announce - aggregate of 209.7.0.0/17 (4777 2516 174 6325) and 209.7.128.0/17 (4777 2516 174 6325)
  209.7.0.0/18         4777 2516 174 6325   - Withdrawn - aggregated with 209.7.64.0/18 (4777 2516 174 6325)
  209.7.64.0/18        4777 2516 174 6325   - Withdrawn - aggregated with 209.7.0.0/18 (4777 2516 174 6325)
  209.7.65.0/24        4777 2516 174 6325   - Withdrawn - matching aggregate 209.7.64.0/18 4777 2516 174 6325
  209.7.66.0/24        4777 2516 174 6325   - Withdrawn - matching aggregate 209.7.64.0/18 4777 2516 174 6325
  209.7.101.0/24       4608 7575 11537 22335 6325   
  209.7.128.0/17       4777 2497 174 6325   - Withdrawn - matching aggregate 209.7.0.0/16 4777 2497 174 6325
  209.7.128.0/18       4777 2516 174 6325   - Withdrawn - aggregated with 209.7.192.0/18 (4777 2516 174 6325)
  209.7.192.0/18       4777 2516 174 6325   - Withdrawn - aggregated with 209.7.128.0/18 (4777 2516 174 6325)
  209.7.226.0/24       4608 7575 11537 22335 6325   
  209.7.244.0/22       4608 7575 11537 22335 6325   
  209.7.248.0/22       4608 7575 11537 22335 6325   
  209.174.0.0/15       4777 2497 174 6325   + Announce - aggregate of 209.174.0.0/16 (4777 2497 174 6325) and 209.175.0.0/16 (4777 2497 174 6325)
  209.174.0.0/16       4777 2497 174 6325   - Withdrawn - aggregated with 209.175.0.0/16 (4777 2497 174 6325)
  209.174.0.0/17       4777 2497 174 6325   - Withdrawn - matching aggregate 209.174.0.0/16 4777 2497 174 6325
  209.174.66.0/23      4777 2497 174 6325   - Withdrawn - matching aggregate 209.174.0.0/16 4777 2497 174 6325
  209.174.128.0/17     4777 2516 174 6325     
  209.175.0.0/16       4777 2497 174 6325   - Withdrawn - aggregated with 209.174.0.0/16 (4777 2497 174 6325)
  209.175.0.0/17       4777 2497 174 6325   - Withdrawn - matching aggregate 209.175.0.0/16 4777 2497 174 6325
  209.175.0.0/16       4777 2516 174 6325   + Announce - aggregate of 209.175.0.0/17 (4777 2516 174 6325) and 209.175.128.0/17 (4777 2516 174 6325)
  209.175.0.0/18       4777 2516 174 6325   - Withdrawn - aggregated with 209.175.64.0/18 (4777 2516 174 6325)
  209.175.17.0/24      4777 2497 7018 6325 6325 6325   
  209.175.64.0/18      4777 2516 174 6325   - Withdrawn - aggregated with 209.175.0.0/18 (4777 2516 174 6325)
  209.175.96.0/24      4777 2497 7018 6325 6325 6325   
  209.175.128.0/17     4777 2516 174 6325   - Withdrawn - aggregated with 209.175.0.0/17 (4777 2516 174 6325)
  209.175.128.0/18     4777 2516 174 6325   - Withdrawn - matching aggregate 209.175.128.0/17 4777 2516 174 6325
  209.175.192.0/18     4777 2497 174 6325     
  216.124.0.0/15       4777 2516 174 6325   + Announce - aggregate of 216.124.0.0/16 (4777 2516 174 6325) and 216.125.0.0/16 (4777 2516 174 6325)
  216.124.0.0/16       4777 2516 174 6325   - Withdrawn - aggregated with 216.125.0.0/16 (4777 2516 174 6325)
  216.124.0.0/17       4777 2516 174 6325   - Withdrawn - matching aggregate 216.124.0.0/16 4777 2516 174 6325
  216.124.128.0/17     4777 2516 174 6325   - Withdrawn - matching aggregate 216.124.0.0/16 4777 2516 174 6325
  216.124.128.0/18     4777 2516 174 6325   - Withdrawn - matching aggregate 216.124.0.0/16 4777 2516 174 6325
  216.124.192.0/18     4777 2516 174 6325   - Withdrawn - matching aggregate 216.124.0.0/16 4777 2516 174 6325
  216.125.0.0/16       4777 2516 174 6325   - Withdrawn - aggregated with 216.124.0.0/16 (4777 2516 174 6325)
  216.125.0.0/17       4777 2516 174 6325   - Withdrawn - matching aggregate 216.125.0.0/16 4777 2516 174 6325
  216.125.32.0/21      4777 2516 174 6325   - Withdrawn - matching aggregate 216.125.0.0/16 4777 2516 174 6325
  216.125.128.0/17     4777 2516 174 6325   - Withdrawn - matching aggregate 216.125.0.0/16 4777 2516 174 6325
  216.125.192.0/18     4777 2497 174 6325     

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

AS6325   87 More Specifics   98 Total Advertisements   ILLINOIS-CENTURY - Illinois Century Network, 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
    64.107.192.0/18               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
    66.99.51.0/24                 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
    66.158.104.0/24               66.158.0.0/17
    163.191.0.0/17                163.191.0.0/16
    163.191.0.0/21                163.191.0.0/16
    163.191.8.0/22                163.191.0.0/16
    163.191.12.0/23               163.191.0.0/16
    163.191.14.0/24               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
    163.191.96.0/20               163.191.0.0/16
    163.191.112.0/21              163.191.0.0/16
    163.191.120.0/22              163.191.0.0/16
    163.191.124.0/24              163.191.0.0/16
    163.191.125.0/24              163.191.0.0/16
    163.191.126.0/24              163.191.0.0/16
    163.191.128.0/17              163.191.0.0/16
    163.191.162.0/23              163.191.0.0/16
    163.191.164.0/22              163.191.0.0/16
    163.191.168.0/21              163.191.0.0/16
    163.191.176.0/21              163.191.0.0/16
    163.191.184.0/22              163.191.0.0/16
    163.191.188.0/23              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
    207.63.128.0/17               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
    207.63.186.0/23               207.63.0.0/16
    207.63.192.0/18               207.63.0.0/16
    207.63.195.0/24               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
    209.7.101.0/24                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
    209.7.192.0/18                209.7.0.0/16
    209.7.226.0/24                209.7.0.0/16
    209.7.244.0/22                209.7.0.0/16
    209.7.248.0/22                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
    209.175.17.0/24               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

Bogus ASes Announced by this AS

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

Whois Entry

whois: 402332

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
             
             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: ZI83-ARIN
             OrgTechName:   Hostmaster
             OrgTechPhone:  +1-779-801-4071 
             OrgTechEmail:  DoIT.ICN.Hostmasternet@illinois.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZI83-ARIN
             
             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: RESER5-ARIN
             OrgTechName:   Reserva, Chuck 
             OrgTechPhone:  +1-217-786-8872 
             OrgTechEmail:  chuck.reserva@illinois.gov
             OrgTechRef:    https://rdap.arin.net/registry/entity/RESER5-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