37.49.152.0/21 SysEleven GmbH
Announced by AS25291 SysEleven GmbH. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 37.49.152.0/21
Prefix
Origin
AS25291 SYSELEVEN
RPKI
RPKI valid
Size
2,048 addresses
Less specific
none
More specifics
3
IRR route objects
1 exact, 0 covering
In RouteViews
2026-10-12 20:02 UTC
Paths
How 37.49.152.0/21 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 25291
| Origin | AS25291 SysEleven GmbH |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 4d 20h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 33891 25291
| Origin | AS25291 SysEleven GmbH |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 5h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 5405 25291
| Origin | AS25291 SysEleven GmbH |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 5h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS25291 to originate 37.49.152.0/21 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 37.49.152.0/21 | /24 | AS25291 SYSELEVEN | RIPE |
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 |
|---|---|---|---|---|
| 37.49.152.0/21 | AS25291 SYSELEVEN | RIPE | SysEleven Global Network - Aggregate route object | SYS11-MNT |
More specific
Prefixes inside 37.49.152.0/21
3 announced prefixes fall inside this one.