Data as of Nov 10, 2026
72.3.0.0/17
No anonymizer space · no proxy exits in 30 daysIllinois Century Network
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 72.3.0.0/17 | 32,768 | ICN | Illinois Century Network (ILTN) · US | Direct Allocation | Sep 8, 2004 | abuse@ |
| └ 72.3.0.0/17 | 32,768 | STATE-OF-ILLINOIS-1 | Illinois Dept of Innovation and Technology (IDIT-6) · US | Reallocated | Apr 4, 2019 | abuse@ |
Network & registry
Registry
Holder
- Organization
- Illinois Century Network
- Handle
- ILTN
- Range
- 72.
3. 0. 0/ 17 - Registration type
- Direct Allocation
- Record created
- Sep 8, 2004
- Reallocated to
- Illinois Dept of Innovation and Technology (IDIT-6)
- Reallocated
- Apr 4, 2019
Origin network
AS6325
US
- Name
- Illinois Century Network
- Type
- Education
- Registered
- Oct 31, 2001
- Domain
- illinois.gov
- Website
- icn.illinois.gov/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 72.
3. 0. 0/ 17 - Netname
- STATE-OF-ILLINOIS-1
- Registrant
- Illinois Dept of Innovation and Technology
- Organization
- Illinois Dept of Innovation and Technology (IDIT-6)
- Org address
- 120 W. Jefferson, Springfield, IL, 62702
- Org country
- US
- Type
- Reallocated
- Handle
- NET-72-3-0-0-2
- Parent
- NET-72-3-0-0-1
- Created
- Apr 4, 2019
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 8, 2004
- Status
- assigned
Report abuse
Abuse contact
- abuse@
illinois. gov - Name
- DoIT Abuse
- Phone
- +1-217-524-3648
- Handle
- DOITA-ARIN