121.37.56.0/21 Huawei Cloud Service data center
Announced by AS55990 Huawei Cloud Service data center. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 121.37.56.0/21
Prefix
Origin
AS55990 HWCSNET
RPKI
RPKI not found
Size
2,048 addresses
Less specific
none
More specifics
1
IRR route objects
2 exact, 1 covering
In RouteViews
2026-10-13 20:02 UTC
Paths
How 121.37.56.0/21 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 4134 58466 55990
| Origin | AS55990 Huawei Cloud Service data center |
| Origin code | incomplete |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 5d 18h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4134 58466 55990
| Origin | AS55990 Huawei Cloud Service data center |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 2h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4134 58466 55990
| Origin | AS55990 Huawei Cloud Service data center |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 2h 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 |
|---|---|---|---|---|
| 121.37.56.0/21 | AS4134 CHINANET-BACKBONE | LEVEL3 | Proxy-registered route object | XINGXUNTECHLTD-MNT |
| 121.37.56.0/21 | AS55990 HWCSNET | RADB | Huawei Clouds Guangzhou Region | MAINT-AS55990 |
| 121.37.0.0/16 covering | AS55990 HWCSNET | RADB | Huawei | MAINT-AS55990 |
More specific
Prefixes inside 121.37.56.0/21
1 announced prefix fall inside this one.