ASN AS6325 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS6325?

AS6325 is listed under Illinois Century Network.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS6325 Illinois Century Network

ASN Lookup Tool

Illinois Century Network illinois.gov

US 114 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	109
Number of IPv6 Routes	5
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2001-10-31

ASN Intelligence API for production workflows

Use ASN data for AS6325 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
209.175.128.0/18	AS6325	Illinois Century Network	Illinois Century Network	16384
209.7.128.0/17	AS6325	Illinois Century Network	Illinois Century Network	32768
209.7.248.0/22	AS6325	Illinois Century Network	Illinois Century Network	1024
207.63.176.0/24	AS6325	Illinois Century Network	Illinois Century Network	256
64.107.128.0/17	AS6325	Illinois Century Network	Illinois Century Network	32768
207.63.0.0/16	AS6325	Illinois Century Network	Illinois Century Network	65536
209.7.0.0/17	AS6325	Illinois Century Network	Illinois Century Network	32768
209.175.0.0/17	AS6325	Illinois Century Network	Illinois Century Network	32768
163.191.64.0/19	AS6325	Illinois Century Network	State of Illinois	8192
64.107.0.0/17	AS6325	Illinois Century Network	Illinois Century Network	32768

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: 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

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

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.
#

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
AS9505	Chunghwa Telecom Co., Ltd.	TW
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

Upstreams

AS Number	Description	Country
AS22335	Metropolitan Research and Education Network	US
AS7018	AT&T Enterprises, LLC	US
AS293	ESnet	US
AS9505	Chunghwa Telecom Co., Ltd.	TW
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
AS22272	IANA - Autonomous System Number	ZZ
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