131.230.236.0/22 Southern Illinois University - School of Medicine
Announced by AS15118 Southern Illinois University - School of Medicine. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 131.230.236.0/22
Prefix
Origin
AS15118 SIUMED
RPKI
RPKI valid
Size
1,024 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 4 covering
In RouteViews
2026-10-14 20:02 UTC
Paths
How 131.230.236.0/22 is reached
Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.
AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 174 1299 62943 15118
| Origin | AS15118 Southern Illinois University - School of Medicine |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 6d 20h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 6939 62943 15118
| Origin | AS15118 Southern Illinois University - School of Medicine |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 7d 5h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 62943 15118
| Origin | AS15118 Southern Illinois University - School of Medicine |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 7d 5h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS15118 to originate 131.230.236.0/22 up to /22. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 131.230.236.0/22 | /22 | AS15118 SIUMED | ARIN |
| 131.230.224.0/20 | /20 | AS15118 SIUMED | ARIN |
| 131.230.0.0/16 | /16 | AS15119 SOUTHERN-ILLINOIS-UNIVERSITY | ARIN |
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 131.230.236.0/22 | AS15118 SIUMED | ARIN | Southern Illinois University Carbondale | MNT-SIU |
| 131.230.236.0/22 | AS15118 SIUMED | RADB | Southern Illinois University | MAINT-BLUEBIRD |
| 131.230.224.0/20 covering | AS15118 SIUMED | ARIN | Southern Illinois University Carbondale | MNT-SIU |
| 131.230.224.0/20 covering | AS15118 SIUMED | LEVEL3 | Proxy-registered route object | LEVEL3-MNT |
| 131.230.224.0/20 covering | AS15118 SIUMED | RADB | ICN Customer - SIU School of MED | MAINT-AS6325 |
| 131.230.0.0/16 covering | AS15119 SOUTHERN-ILLINOIS-UNIVERSITY | ARIN | Southern Illinois University Carbondale | MNT-SIU |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.