121.51.2.0/23 Shenzhen Tencent Computer Systems Company Limited
Announced by AS45090 Shenzhen Tencent Computer Systems Company Limited. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 121.51.2.0/23
Prefix
Origin
AS45090 TENCENT-NET-AP
RPKI
RPKI valid
Size
512 addresses
Less specific
More specifics
0
IRR route objects
3 exact, 4 covering
In RouteViews
2026-10-12 16:02 UTC
Paths
How 121.51.2.0/23 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 45090
| Origin | AS45090 Shenzhen Tencent Computer Systems Company Limited |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 4d 17h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4134 58466 45090
| Origin | AS45090 Shenzhen Tencent Computer Systems Company Limited |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 1h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4134 58466 45090
| Origin | AS45090 Shenzhen Tencent Computer Systems Company Limited |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 1h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS45090 to originate 121.51.2.0/23 up to /23. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 121.51.2.0/23 | /23 | AS45090 TENCENT-NET-AP | APNIC |
| 121.51.0.0/16 | /16 | AS45090 TENCENT-NET-AP | APNIC |
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 |
|---|---|---|---|---|
| 121.51.2.0/23 | AS4134 CHINANET-BACKBONE | LEVEL3 | Proxy-registered route object | XINGXUNTECHLTD-MNT |
| 121.51.2.0/23 | AS45090 TENCENT-NET-AP | NTTCOM | Proxy-registered route object | MAINT-AS9304 |
| 121.51.2.0/23 | AS45090 TENCENT-NET-AP | RADB | Proxy-registered route object | MAINT-HGC-INTL |
| 121.51.0.0/16 covering | AS45090 TENCENT-NET-AP | APNIC | Shenzhen Tencent Computer Systems Company Limited | MAINT-CNNIC-AP |
| 121.51.0.0/16 covering | AS4134 CHINANET-BACKBONE | LEVEL3 | Proxy-registered route object | XINGXUNTECHLTD-MNT |
| 121.51.0.0/16 covering | AS45090 TENCENT-NET-AP | NTTCOM | Proxy-registered route object | MAINT-AS9304 |
| 121.51.0.0/16 covering | AS45090 TENCENT-NET-AP | RADB | Proxy-registered route object | MAINT-HGC-INTL |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.