37.46.136.0/21 Cyso Group B.V.
Announced by AS25151 Cyso Group B.V. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 37.46.136.0/21
Prefix
Origin
AS25151 CYSO-AS
RPKI
RPKI valid
Size
2,048 addresses
Less specific
none
More specifics
0
IRR route objects
1 exact, 0 covering
In RouteViews
2026-10-12 08:02 UTC
Paths
How 37.46.136.0/21 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 13760 3356 25151
| Origin | AS25151 Cyso Group B.V. |
| Origin code | IGP |
| Communities | 3356:2 3356:22 3356:100 3356:123 3356:503 3356:901 3356:2067 36601:150 36601:2001 36601:13760 |
| Updated | 4d 5h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 25151
| Origin | AS25151 Cyso Group B.V. |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 4d 13h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 3356 25151
| Origin | AS25151 Cyso Group B.V. |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 4d 13h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS25151 to originate 37.46.136.0/21 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 37.46.136.0/21 | /24 | AS25151 CYSO-AS | 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 |
|---|---|---|---|---|
| 37.46.136.0/21 | AS25151 CYSO-AS | RIPE | Cyso Hosting B.V. Block | CYSO-MNT |