146.203.148.0/22 Mount Sinai School of Medicine
Announced by AS11452 Mount Sinai School of Medicine. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 146.203.148.0/22
Prefix
Origin
AS11452 MOUNT-SINAI
RPKI
RPKI valid
Size
1,024 addresses
Less specific
none
More specifics
4
IRR route objects
1 exact, 3 covering
In RouteViews
2026-10-14 16:02 UTC
Paths
How 146.203.148.0/22 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 7018 11452
| Origin | AS11452 Mount Sinai School of Medicine |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 6d 14h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 7018 11452
| Origin | AS11452 Mount Sinai School of Medicine |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 23h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 7018 11452
| Origin | AS11452 Mount Sinai School of Medicine |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 22h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS11452 to originate 146.203.148.0/22 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 146.203.148.0/22 | /24 | AS11452 MOUNT-SINAI | 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 |
|---|---|---|---|---|
| 146.203.148.0/22 | AS11452 MOUNT-SINAI | ARIN | Mount Sinai School of Medicine | MNT-MSSM |
| 146.203.128.0/18 covering | AS7029 WINDSTREAM | RADB | Windstream (US LEC) | MAINT-AS7029 |
| 146.203.0.0/16 covering | AS11452 MOUNT-SINAI | LEVEL3 | 146.203.0.0/16 route for MSSMEDU | LEVEL3-MNT |
| 146.203.0.0/16 covering | AS7029 WINDSTREAM | RADB | Windstream (US LEC) | MAINT-AS7029 |
More specific
Prefixes inside 146.203.148.0/22
4 announced prefixes fall inside this one.