146.203.0.0/18 Mount Sinai School of Medicine
Announced by AS11452 Mount Sinai School of Medicine. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 146.203.0.0/18
Prefix
Origin
AS11452 MOUNT-SINAI
RPKI
RPKI not found
Size
16,384 addresses
Less specific
none
More specifics
0
IRR route objects
1 exact, 2 covering
In RouteViews
2026-10-14 04:02 UTC
Paths
How 146.203.0.0/18 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 11452×2
| Origin | AS11452 Mount Sinai School of Medicine |
| Origin code | incomplete |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 6d 2h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 1299 174 11452×2
| Origin | AS11452 Mount Sinai School of Medicine |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 10h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 174 11452×2
| Origin | AS11452 Mount Sinai School of Medicine |
| Origin code | incomplete |
| Communities | 6461:5997 36295:100 36295:6461 |
| Updated | 16h 31m ago |
RPKI
Route origin authorizations
No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.
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 |
|---|---|---|---|---|
| 146.203.0.0/18 | 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 |