ASN Lookup Tool

Illinois Century Network illinois.gov US US 75 Routes

AS Data

AS6325

AS6325 – Illinois Century Network

AS Number 6325
AS Name ILLINOIS-CENTURY
Organization Illinois Century Network (iltn)
Country US
Website illinois.gov
Number of IPv4 Routes 70
Number of IPv6 Routes 5
ASN type GOVERNMENT
Registry ARIN
Date Allocated 2001-10-31

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IP Ranges

Route # IPs
209.175.128.0/18 16384
163.191.0.0/17 32768
209.7.128.0/17 32768
216.124.128.0/17 32768
66.99.0.0/18 16384
207.63.128.0/18 16384
66.158.0.0/17 32768
209.174.128.0/17 32768
2001:1848:1000::/36 ~5×10²⁷
64.107.128.0/17 32768
207.63.0.0/16 65536
209.7.0.0/17 32768
209.175.0.0/17 32768
64.107.0.0/17 32768
207.63.192.0/18 16384
66.158.15.0/24 256
209.175.0.0/18 16384
206.166.0.0/18 16384
216.125.192.0/18 16384
163.191.176.0/21 2048
163.191.14.0/24 256
163.191.8.0/22 1024
66.99.64.0/18 16384
216.124.192.0/18 16384
2001:1848::/32 ~79×10²⁷
64.107.0.0/18 16384
207.63.64.0/18 16384
216.125.128.0/17 32768
2001:1848:4000::/34 ~20×10²⁷
216.124.0.0/17 32768
209.174.0.0/16 65536
64.150.0.0/17 32768
207.63.0.0/17 32768
209.175.64.0/18 16384
64.107.192.0/18 16384
216.125.0.0/16 65536
65.79.0.0/17 32768
163.191.12.0/23 512
163.191.188.0/23 512
216.124.128.0/18 16384
209.7.0.0/16 65536
163.191.128.0/17 32768
209.7.64.0/18 16384
66.99.0.0/17 32768
207.63.128.0/17 32768
209.174.0.0/17 32768
206.166.64.0/18 16384
163.191.192.0/19 8192
163.191.164.0/22 1024
163.191.162.0/23 512
66.99.128.0/18 16384
209.175.128.0/17 32768
64.107.64.0/18 16384
209.7.192.0/18 16384
66.99.192.0/18 16384
216.124.0.0/16 65536
207.63.0.0/18 16384
64.107.0.0/16 65536
163.191.184.0/22 1024
2001:1848:8000::/34 ~20×10²⁷

Raw Whois Response

#
# 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:  +1-815-936-4643 
OrgTechEmail:  DoIT.ICN.Hostmasternet@illinois.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/ZI83-ARIN

RTechHandle: ZI83-ARIN
RTechName:   Hostmaster
RTechPhone:  +1-815-936-4643 
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.
#

Parsed Whois Response

Peers

AS Number Description Country
AS22335 Metropolitan Research and Education Network US
AS15118 Southern Illinois University - School of Medicine US
AS395433 Township High School District 214 US
AS17196 College of duPage US
AS6939 Hurricane Electric LLC US
AS22978 Governors State University US
AS394241 Murphysboro Community Unit School District No. 186 US
AS395068 McHenry County College District 528 US
AS394031 South Suburban College of Cook County US
AS10242 US Internet Corp US
AS40710 College of Lake County US
AS6200 University of Illinois Chicago US
AS15118 Southern Illinois University School of Medicine US
AS23427 Glenbard HSD US
AS12129 123.Net, Inc. US
AS293 ESnet US
AS53597 Hoyos Consulting LLC US
AS23367 Adaptive Data Networks, LLC US
AS23427 Glenbard HSD #87 US
AS53695 Southern Illinois University at Edwardsville US
AS6461 Zayo Bandwidth US
AS394026 Village of Schaumburg US
AS1702 CHICAGO STATE UNIVERSITY US
AS7018 AT&T Enterprises, LLC US
AS53643 Manteno Community Unit School District 5 US
AS32344 Community High School District 99 US
AS15337 Wm. Rainey Harper College US
AS7386 Illinois State University US
AS32590 Valve Corporation US
AS19480 CHICAGO PUBLIC LIBRARY US
AS33019 Wheaton College US
AS26255 Oakton Community College US
AS29838 Atlantic Metro Communications II, Inc. US
AS10308 Northeastern Illinois University US
AS1828 Unitas Global US
AS394798 Chicago Park District US
AS1416 Chicago Public Schools US
AS32787 Akamai Technologies, Inc. US
AS29885 Univeristy of Chicago Hospitals & Health System US
AS394797 Millikin University US
AS395847 Maine Township High School District 207 US
AS32294 City of Champaign, Illinois US
AS22666 Glenbrook High School District US
AS46286 Cook County US
AS394534 City of Chicago US
AS40387 University of Illinois US
AS16276 OVH SAS FR
AS19754 The Fusion Network, LLC US
AS23434 State Universities Retirement System US
AS33460 Waubonsee Community College US
AS397112 Illinois Mathematics and Science Academy US
AS63056 Hoopeston Area Schools US
AS22272 IANA - Autonomous System Number US
AS29993 North Central College US
AS1239 Cogent Communications, LLC US
AS19653 CTS Communications Corp US
AS174 Cogent Communications, LLC US
AS26367 Bradley University US
AS19151 BroadbandONE, LLC US
AS2381 WiscNet US

Upstreams

AS Number Description Country
AS22335 Metropolitan Research and Education Network US
AS7018 AT&T Enterprises, LLC US
AS293 ESnet US
AS6939 Hurricane Electric LLC US
AS6461 Zayo Bandwidth US
AS174 Cogent Communications, LLC US
AS32787 Akamai Technologies, Inc. US

Downstreams

AS Number Description Country
AS29885 Univeristy of Chicago Hospitals & Health System US
AS394797 Millikin University US
AS395433 Township High School District 214 US
AS17196 College of duPage US
AS395847 Maine Township High School District 207 US
AS22978 Governors State University US
AS394241 Murphysboro Community Unit School District No. 186 US
AS395068 McHenry County College District 528 US
AS394031 South Suburban College of Cook County US
AS40710 College of Lake County US

Legacy Routes

136.144.0.0/20

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Frequently Asked Questions

ASN AS6325 is an Autonomous System Number used to identify a network for BGP internet routing.
AS6325 is listed under Illinois Century Network.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.