Data as of Nov 5, 2026
66.99.51.0/24
No anonymizer space · no proxy exits in 30 daysMannheim School District 83 · space held by Illinois Century Network
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin Sep 2026
from AS6325 Illinois Century Network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 66.99.0.0/18 since Sep 2013 | AS6325 | Business | 12 | Illinois Century Network | |
| 66.99.0.0/17 since May 2005 | AS6325 | Business | 15 | Illinois Century Network | |
| 66.99.0.0/16 since May 2005 | AS6325 | Business | 20 1 always on | Illinois Century Network |
Network & registry
Origin network
AS402166
US
- Name
- Mannheim School District 83
- Type
- Education
- Registered
- Jan 30, 2026
- Domain
- d83.org
- Industry
- Online Informational Content
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jan 2024
- Current origin since
- Sep 2026 · 2 mo
- Origin networks
- 2
- Last change of origin
- Sep 2026
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 66.99.51.0/24 | AS402166 | /24 | ARIN | RPKI valid |
| 66.99.0.0/18 | AS6325 | /18 | ARIN | Another network |
| 66.99.0.0/17 | AS6325 | /17 | ARIN | Another network |
| 66.99.0.0/16 | AS6325 | /16 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS402166 | RADB | Mannheim School District 83 (AS402166) | MAINT-AS6325 | Jul 10, 2026 |
Whois
Registration for this announcement
- Range
- 66.
99. 0. 0/ 16 - Netname
- ICN7
- Registrant
- Illinois Century Network
- Organization
- Illinois Century Network (ILTN)
- Org address
- 120 W Jefferson, Springfield, IL, 62702
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-66-99-0-0-1
- Parent
- NET-66-0-0-0-0
- Created
- Apr 9, 2001
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 9, 2001
- Status
- assigned
Report abuse
Abuse contact
- doit.
security@ illinois. gov - Name
- ICN Abuse
- Phone
- +1-217-524-3648
- Handle
- ICNAB-ARIN