216.21.18.0/24 National Defense University
Announced by AS5721 National Defense University. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 216.21.18.0/24
Prefix
Origin
AS5721 NDU-NET
RPKI
RPKI not found
Size
256 addresses
Less specific
none
More specifics
0
IRR route objects
0 exact, 0 covering
In RouteViews
2026-10-15 12:02 UTC
Paths
How 216.21.18.0/24 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 7922 33657 5721
| Origin | AS5721 National Defense University |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 1d 9h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 33657 5721
| Origin | AS5721 National Defense University |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 4d 3h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 7922 33657 5721
| Origin | AS5721 National Defense University |
| Origin code | IGP |
| Communities | 6461:5997 36295:100 36295:6461 |
| Updated | 21h 38m ago |
RPKI
Route origin authorizations
No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.