Illinois Century Network
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 81 · 753,666 IPv4 addresses |
| IPv6 | 7 prefixes (largest 2001:1848::/32) |
| Cluster ID | 213285818 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 8 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
6 weekly snapshots · JSON
89
+3 netblocks since 2026-07-05
2026-07-05
peak 89
2026-07-26
IP Ranges (81)
showing 50 of 81 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 206.71.10.9/32 | Illinois Century Network | PEERINGDB | ASSIGNED | ● high |
| 208.115.136.22/32 | Illinois Century Network | PEERINGDB | ASSIGNED | ● high |
| 2001:504:0:4::6325:1/128 | Illinois Century Network | PEERINGDB | ASSIGNED | ● high |
| 2001:504:45:10::9/128 | Illinois Century Network | PEERINGDB | ASSIGNED | ● high |
| 64.107.0.0/16 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 64.107.0.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 64.107.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 64.107.64.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 64.107.128.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 64.107.128.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 64.107.192.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 64.150.0.0/17 | Illinois Century Network | ARIN | DIRECT ALLOCATION | ● medium |
| 65.79.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.0.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.0.0/16 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.51.0/24 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.64.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.128.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.128.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.99.192.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.158.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 66.158.15.0/24 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 72.3.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.0.0/21 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.8.0/22 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.12.0/23 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.14.0/24 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.128.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.162.0/23 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.164.0/22 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.168.0/21 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.176.0/21 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.184.0/22 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.188.0/23 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.192.0/19 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 163.191.224.0/19 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 206.166.0.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 206.166.0.0/17 | Illinois Century Network | ARIN | DIRECT ALLOCATION | ● medium |
| 206.166.64.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 207.63.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 207.63.0.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 207.63.0.0/16 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 207.63.64.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 207.63.128.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 207.63.128.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 207.63.192.0/18 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 209.7.0.0/16 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
| 209.7.0.0/17 | Illinois Century Network | BGP | ANNOUNCED | ● medium |
IPv6 ranges (7)
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: C
how networks compare →
71.9%
of checked blocks have valid RPKI ROA coverage
(64 of 89)
No discrepancies found among checked blocks.
NIC Handles
AS6325
AS6325
ICNAB-ARIN
ILTN
RESER5-ARIN
WEBST193-ARIN
ZI83-ARIN
ZI83-ARIN