- Registered on
- 31 Oct 2001 (24 years old)
- Registered to
- ARIN-ILTN (arin)
- Network status
- Active, Allocated under ARIN
- Network type
- Eyeball
- Prefixes Originated
- 108 IPv4, 5 IPv6
Upstreams
| Prefix | Description | |
|---|---|---|
|
|
64.107.0.0/18 | Illinois Century Network |
|
|
65.79.0.0/17 | Illinois Century Network |
|
|
66.99.0.0/17 | Illinois Century Network |
|
|
66.99.0.0/16 | Illinois Century Network |
|
|
72.3.0.0/17 | Illinois Century Network |
|
|
163.191.0.0/17 | State of Illinois |
|
|
207.63.195.0/24 | Illinois Century Network |
|
|
209.174.0.0/16 | Illinois Century Network |
|
|
216.124.0.0/16 | Illinois Century Network |
|
|
64.107.0.0/17 | Illinois Century Network |
|
|
64.107.0.0/16 | Illinois Century Network |
|
|
64.107.64.0/18 | Illinois Century Network |
|
|
64.107.128.0/18 | Illinois Century Network |
|
|
64.107.128.0/17 | Illinois Century Network |
|
|
64.107.167.0/24 | Illinois Century Network |
|
|
64.107.192.0/18 | Illinois Century Network |
|
|
64.150.0.0/17 | Illinois Century Network |
|
|
66.99.0.0/18 | Illinois Century Network |
|
|
66.99.51.0/24 | Illinois Century Network |
|
|
66.99.64.0/18 | Illinois Century Network |
|
|
66.99.97.0/24 | Illinois Century Network |
|
|
66.99.128.0/18 | Illinois Century Network |
|
|
66.99.128.0/17 | Illinois Century Network |
|
|
66.99.192.0/18 | Illinois Century Network |
|
|
66.99.209.0/24 | Illinois Century Network |
|
|
66.158.0.0/23 | Illinois Century Network |
|
|
66.158.0.0/17 | Illinois Century Network |
|
|
66.158.2.0/23 | Illinois Century Network |
|
|
66.158.5.0/24 | Illinois Century Network |
|
|
66.158.6.0/23 | Illinois Century Network |
|
|
66.158.8.0/21 | Illinois Century Network |
|
|
66.158.16.0/20 | Illinois Century Network |
|
|
66.158.104.0/24 | Illinois Century Network |
|
|
72.3.0.0/19 | Illinois Century Network |
|
|
136.144.0.0/20 | Millikin University |
|
|
163.191.0.0/21 | State of Illinois |
|
|
163.191.8.0/22 | State of Illinois |
|
|
163.191.12.0/23 | State of Illinois |
|
|
163.191.14.0/24 | State of Illinois |
|
|
163.191.32.0/19 | State of Illinois |
|
|
163.191.64.0/19 | State of Illinois |
|
|
163.191.96.0/20 | State of Illinois |
|
|
163.191.112.0/21 | State of Illinois |
|
|
163.191.120.0/22 | State of Illinois |
|
|
163.191.124.0/24 | State of Illinois |
|
|
163.191.125.0/24 | State of Illinois |
|
|
163.191.126.0/24 | State of Illinois |
|
|
163.191.128.0/17 | State of Illinois |
|
|
163.191.162.0/23 | State of Illinois |
|
|
163.191.164.0/22 | State of Illinois |
|
|
163.191.168.0/21 | State of Illinois |
|
|
163.191.176.0/21 | State of Illinois |
|
|
163.191.184.0/22 | State of Illinois |
|
|
163.191.188.0/23 | State of Illinois |
|
|
163.191.192.0/19 | State of Illinois |
|
|
163.191.224.0/19 | State of Illinois |
|
|
192.77.125.0/24 | Rock Valley College |
|
|
206.166.0.0/24 | Illinois Century Network |
|
|
206.166.0.0/18 | Illinois Century Network |
|
|
206.166.0.0/17 | Illinois Century Network |
|
|
206.166.18.0/24 | Illinois Century Network |
|
|
206.166.64.0/18 | Illinois Century Network |
|
|
207.63.0.0/16 | Illinois Century Network |
|
|
207.63.0.0/18 | Illinois Century Network |
|
|
207.63.0.0/17 | Illinois Century Network |
|
|
207.63.64.0/18 | Illinois Century Network |
|
|
207.63.128.0/18 | Illinois Century Network |
|
|
207.63.128.0/17 | Illinois Century Network |
|
|
207.63.140.0/24 | Illinois Century Network |
|
|
207.63.175.0/24 | Illinois Century Network |
|
|
207.63.176.0/24 | Illinois Century Network |
|
|
207.63.183.0/24 | Illinois Century Network |
|
|
207.63.186.0/23 | Illinois Century Network |
|
|
207.63.192.0/18 | Illinois Century Network |
|
|
209.7.0.0/16 | Illinois Century Network |
|
|
209.7.0.0/17 | Illinois Century Network |
|
|
209.7.0.0/18 | Illinois Century Network |
|
|
209.7.64.0/18 | Illinois Century Network |
|
|
209.7.65.0/24 | Illinois Century Network |
|
|
209.7.66.0/24 | Illinois Century Network |
|
|
209.7.128.0/17 | Illinois Century Network |
|
|
209.7.128.0/18 | Illinois Century Network |
|
|
209.7.192.0/18 | Illinois Century Network |
|
|
209.174.0.0/17 | Illinois Century Network |
|
|
209.174.66.0/23 | Illinois Century Network |
|
|
209.174.128.0/17 | Illinois Century Network |
|
|
209.175.0.0/16 | Illinois Century Network |
|
|
209.175.0.0/17 | Illinois Century Network |
|
|
209.175.0.0/18 | Illinois Century Network |
|
|
209.175.17.0/24 | Illinois Century Network |
|
|
209.175.64.0/18 | Illinois Century Network |
|
|
209.175.96.0/24 | Illinois Century Network |
|
|
209.175.128.0/17 | Illinois Century Network |
|
|
209.175.128.0/18 | Illinois Century Network |
|
|
209.175.192.0/18 | Illinois Century Network |
|
|
216.124.0.0/17 | Illinois Century Network |
|
|
216.124.52.0/22 | Illinois Century Network |
|
|
216.124.56.0/23 | Illinois Century Network |
|
|
216.124.58.0/23 | Illinois Century Network |
|
|
216.124.60.0/23 | Illinois Century Network |
|
|
216.124.128.0/18 | Illinois Century Network |
|
|
216.124.128.0/17 | Illinois Century Network |
|
|
216.124.192.0/18 | Illinois Century Network |
|
|
216.125.0.0/16 | Illinois Century Network |
|
|
216.125.0.0/17 | Illinois Century Network |
|
|
216.125.32.0/21 | Illinois Century Network |
|
|
216.125.128.0/17 | Illinois Century Network |
|
|
216.125.192.0/18 | Illinois Century Network |
|
|
2001:1848::/32 | Illinois Century Network |
|
|
2001:1848:1000::/36 | Illinois Century Network |
|
|
2001:1848:4000::/34 | Illinois Century Network |
|
|
2001:1848:8000::/34 | Illinois Century Network |
|
|
2001:1848:c000::/34 | Illinois Century Network |
Network Policy
Click here to learn more about what this graph means and what makes up a network policy
Chart Display Options
Prefixes in selected policy
How are upstreams and downstreams calculated?
Upstreams
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
| AS174 | Cogent Communications, LLC | ✔ | ✔ | |
| AS7018 | AT&T Enterprises, LLC | ✔ | ✔ | |
| AS32787 | Akamai (Prolexic) | ✔ | ✘ | |
| AS6461 | Zayo Bandwidth | ✔ | ✔ | |
| AS22335 | Metropolitan Research and Education Network | ✔ | ✘ | |
| AS6939 | Hurricane Electric LLC | ✘ | ✔ |
Peers
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
| AS174 | Cogent Communications, LLC | ✔ | ✔ | |
| AS32787 | Akamai (Prolexic) | ✔ | ✘ | |
| AS7018 | AT&T Enterprises, LLC | ✔ | ✔ | |
| AS6461 | Zayo Bandwidth | ✔ | ✔ | |
| AS6939 | Hurricane Electric LLC | ✔ | ✔ | |
| AS394534 | City of Chicago | ✔ | ✘ | |
| AS22335 | Metropolitan Research and Education Network | ✔ | ✔ | |
| AS46286 | Cook County | ✔ | ✘ | |
| AS53695 | Southern Illinois University at Edwardsville | ✔ | ✘ | |
| AS397112 | Illinois Mathematics and Science Academy | ✔ | ✘ | |
| AS19070 | Eastern Illinois University | ✔ | ✘ | |
| AS22887 | Western Illinois University | ✔ | ✘ | |
| AS395433 | Township High School District 214 | ✔ | ✘ | |
| AS32344 | Community High School District 99 | ✔ | ✘ | |
| AS33460 | Waubonsee Community College | ✔ | ✘ | |
| AS26255 | Oakton Community College | ✔ | ✘ | |
| AS33019 | Wheaton College | ✔ | ✘ | |
| AS10308 | Northeastern Illinois University | ✔ | ✘ | |
| AS29993 | North Central College | ✔ | ✘ | |
| AS15118 | Southern Illinois University - School of Medicine | ✔ | ✘ | |
| AS53643 | Manteno Community Unit School District 5 | ✔ | ✘ | |
| AS22666 | Glenbrook High School District | ✔ | ✘ | |
| AS23427 | Glenbard HSD #87 | ✔ | ✘ | |
| AS22978 | Governors State University | ✔ | ✘ | |
| AS22272 | ERR_AS_NAME_NOT_FOUND | ✔ | ✘ | |
| AS1416 | Chicago Public Schools | ✔ | ✘ | |
| AS1702 | CHICAGO STATE UNIVERSITY | ✔ | ✘ | |
| AS15337 | Wm. Rainey Harper College | ✔ | ✘ | |
| AS395847 | Maine Township High School District 207 | ✔ | ✘ | |
| AS394798 | Chicago Park District | ✔ | ✘ | |
| AS11417 | Northern Illinois University | ✔ | ✘ | |
| AS394026 | Village of Schaumburg | ✔ | ✘ | |
| AS394241 | Murphysboro Community Unit School District No. 186 | ✔ | ✘ | |
| AS29885 | Univeristy of Chicago Hospitals & Health System | ✔ | ✘ | |
| AS40038 | Moraine Valley Community College | ✔ | ✘ | |
| AS17196 | College of duPage | ✔ | ✘ | |
| AS49544 | i3D.net B.V | ✔ | ✔ | |
| AS1828 | Unitas Global | ✔ | ✔ | |
| AS6327 | Shaw Communications | ✔ | ✘ | |
| AS53642 | Central Community Unit School District 301 | ✔ | ✘ | |
| AS63056 | Hoopeston Area Schools | ✔ | ✔ | |
| AS15169 | Google LLC | ✔ | ✘ | |
| AS9505 | Taiwan Internet Gateway | ✔ | ✘ | |
| AS40710 | College of Lake County | ✔ | ✘ | |
| AS13335 | Cloudflare, Inc. | ✔ | ✔ | |
| AS394031 | South Suburban College of Cook County | ✔ | ✘ | |
| AS10242 | US Internet Corp | ✔ | ✔ | |
| AS1239 | Sprint Wireline (Cogent) | ✔ | ✘ | |
| AS12129 | 123.Net, Inc. | ✔ | ✘ | |
| AS293 | ESnet | ✔ | ✘ | |
| AS53597 | Hoyos Consulting LLC | ✔ | ✔ | |
| AS62887 | WhiteSky Communications, LLC. | ✔ | ✘ | |
| AS17378 | TierPoint, LLC | ✔ | ✔ | |
| AS32590 | Valve Corporation | ✔ | ✔ | |
| AS7386 | Illinois State University | ✔ | ✘ | |
| AS395068 | McHenry County College District 528 | ✔ | ✘ | |
| AS32294 | City of Champaign, Illinois | ✔ | ✘ | |
| AS6200 | University of Illinois Chicago | ✔ | ✘ | |
| AS32464 | University Of Illinois College Of Medicine At Peoria | ✔ | ✘ |
Downstreams
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
| AS394534 | City of Chicago | ✔ | ✘ | |
| AS53695 | Southern Illinois University at Edwardsville | ✔ | ✘ | |
| AS46286 | Cook County | ✔ | ✘ | |
| AS397112 | Illinois Mathematics and Science Academy | ✔ | ✘ | |
| AS19070 | Eastern Illinois University | ✔ | ✘ | |
| AS395433 | Township High School District 214 | ✔ | ✘ | |
| AS22887 | Western Illinois University | ✔ | ✘ | |
| AS32344 | Community High School District 99 | ✔ | ✘ | |
| AS33460 | Waubonsee Community College | ✔ | ✘ | |
| AS26255 | Oakton Community College | ✔ | ✘ | |
| AS10308 | Northeastern Illinois University | ✔ | ✘ | |
| AS33019 | Wheaton College | ✔ | ✘ | |
| AS15337 | Wm. Rainey Harper College | ✔ | ✘ | |
| AS1416 | Chicago Public Schools | ✔ | ✘ | |
| AS1702 | CHICAGO STATE UNIVERSITY | ✔ | ✘ | |
| AS22978 | Governors State University | ✔ | ✘ | |
| AS394798 | Chicago Park District | ✔ | ✘ | |
| AS29993 | North Central College | ✔ | ✘ | |
| AS22272 | ERR_AS_NAME_NOT_FOUND | ✔ | ✘ | |
| AS23427 | Glenbard HSD #87 | ✔ | ✘ | |
| AS15118 | Southern Illinois University - School of Medicine | ✔ | ✘ | |
| AS22666 | Glenbrook High School District | ✔ | ✘ | |
| AS395847 | Maine Township High School District 207 | ✔ | ✘ | |
| AS53643 | Manteno Community Unit School District 5 | ✔ | ✘ | |
| AS11417 | Northern Illinois University | ✔ | ✘ | |
| AS394026 | Village of Schaumburg | ✔ | ✘ | |
| AS394241 | Murphysboro Community Unit School District No. 186 | ✔ | ✘ | |
| AS29885 | Univeristy of Chicago Hospitals & Health System | ✔ | ✘ | |
| AS17196 | College of duPage | ✔ | ✘ | |
| AS53642 | Central Community Unit School District 301 | ✔ | ✘ | |
| AS40038 | Moraine Valley Community College | ✔ | ✘ | |
| AS40710 | College of Lake County | ✔ | ✘ | |
| AS394031 | South Suburban College of Cook County | ✔ | ✘ | |
| AS63056 | Hoopeston Area Schools | ✔ | ✔ | |
| AS7386 | Illinois State University | ✔ | ✘ | |
| AS395068 | McHenry County College District 528 | ✔ | ✘ | |
| AS6200 | University of Illinois Chicago | ✔ | ✘ | |
| AS32464 | University Of Illinois College Of Medicine At Peoria | ✔ | ✘ | |
| AS32294 | City of Champaign, Illinois | ✔ | ✘ |
ASHandle: AS6325 OrgID: ILTN ASName: ILLINOIS-CENTURY ASNumber: 6325 RegDate: 2001-10-31 Updated: 2015-11-16 TechHandle: ZI83-ARIN Source: ARIN OrgID: ILTN OrgName: Illinois Century Network CanAllocate: Street: 120 W Jefferson Street: Suite B City: Springfield State/Prov: IL Country: US PostalCode: 62702 RegDate: 1970-01-01 Updated: 2025-09-24 ReferralServer: rwhois://rwhois.illinois.net:4321 OrgAdminHandle: ZI83-ARIN OrgTechHandle: RESER5-ARIN OrgTechHandle: WEBST193-ARIN OrgTechHandle: ZI83-ARIN OrgAbuseHandle: ICNAB-ARIN Source: ARIN OrgAdminHandle: ZI83-ARIN OrgAdminName: Hostmaster # Email removed, Log into bgp.tools to see whois emails OrgTechHandle: RESER5-ARIN OrgTechName: Chuck Reserva # Email removed, Log into bgp.tools to see whois emails OrgTechHandle: WEBST193-ARIN OrgTechName: Andrew Webster # Email removed, Log into bgp.tools to see whois emails OrgTechHandle: ZI83-ARIN OrgTechName: Hostmaster # Email removed, Log into bgp.tools to see whois emails OrgAbuseHandle: ICNAB-ARIN OrgAbuseName: ICN Abuse # Email removed, Log into bgp.tools to see whois emails TechHandle: ZI83-ARIN TechName: Hostmaster # Email removed, Log into bgp.tools to see whois emailsLast Update: 2026-02-11T03:29:24Z UTC
Member of the following AS-SETs
| - | Member | ASN Count |
|---|---|---|
| RADB | as-kddcustomer2 | 8206 |
| RADB | as-icn-customers | 69 |
| LEVEL3 | as-sprint-origins | 7309 |
| RADB | as-rcn-customer | 2247 |
| LEVEL3 | as-sprint-customers | 1756 |
| RIPE | as-gttcust | 89073 |
| LEVEL3 | as-level3-origins-na | 0 |
| ARIN | as1239:as-customers | 4238 |
| LEVEL3 | as-as209-cust | 1818 |
| RADB | as22335:as-customers | 82 |
| RADB | as-telstra-intl-customers | 11999 |
| RADB | as-cci-il-cust | 23 |
| LEVEL3 | as-level3-customers-na | 0 |
| RIPE | as-gttcust6 | 88517 |
| RADB | as6325:as-cone | 69 |
| RADB | as-hurricanev6 | 20414 |
| RADB | as-prole | 1194 |
| RADB | as6325:as-icn | 69 |
| RADB | as-telstra-testing-1 | 11790 |
- PeeringDB AS-SET:
- AS-ICN-CUSTOMERS
- Suggested Prefix Limits
-
IPv4: 200
IPv6: 20
Internet Exchange Points
| Name | IPv4 | IPv6 | Link Speed | |
|---|---|---|---|---|
| Equinix Chicago | 208.115.136.22 | 2001:504:0:4::6325:1 | 200 gbps | |
| FD-IX - St. Louis | 206.71.10.9 | 2001:504:45:10::9 | 10 gbps |