AS21666 OSF Healthcare System 🇺🇸 US
Announcing 4 prefixes, seen at the RIS collectors.
IPv4 prefixes
4
1,024 (4 × /24)
IPv6 prefixes
0
-
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS21666
- Name
- OSF Healthcare System
- Organisation
- OSF Healthcare System
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 2022-08-30
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
4 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 38.65.207.0/24 v4 | no ROA | 42 | 34549646121666 | 2026-09-18 |
| 38.131.231.0/24 v4 | no ROA | 42 | 34549646121666 | 2026-09-18 |
| 198.246.176.0/24 v4 | RPKI valid | 42 | 34549646121666 | 2026-09-18 |
| 204.238.189.0/24 v4 | RPKI valid | 42 | 34549646121666 | 2026-09-18 |