42.224.0.0/12 CHINA UNICOM China169 Backbone
Announced by AS4837 CHINA UNICOM China169 Backbone. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 42.224.0.0/12
Prefix
Origin
AS4837 CHINA169-Backbone
RPKI
RPKI valid
Size
1,048,576 addresses
Less specific
none
More specifics
12
IRR route objects
3 exact, 0 covering
In RouteViews
2026-10-15 04:02 UTC
Paths
How 42.224.0.0/12 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 7029 1299 4837
| Origin | AS4837 CHINA UNICOM China169 Backbone |
| Origin code | IGP |
| Communities | 7029:2090 36601:150 36601:2001 36601:13760 |
| Updated | 23h 9m ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 1299 4837
| Origin | AS4837 CHINA UNICOM China169 Backbone |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 7d 9h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4837
| Origin | AS4837 CHINA UNICOM China169 Backbone |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 7d 9h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS4837 to originate 42.224.0.0/12 up to /12. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 42.224.0.0/12 | /12 | AS4837 CHINA169-Backbone | 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 |
|---|---|---|---|---|
| 42.224.0.0/12 | AS4837 CHINA169-Backbone | APNIC | China Unicom Henan Province Network | MAINT-CNCGROUP-RR |
| 42.224.0.0/12 | AS4837 CHINA169-Backbone | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK |
| 42.224.0.0/12 | AS4837 CHINA169-Backbone | RADB | CMI (Customer Route) | MAINT-AS58453 |
More specific
Prefixes inside 42.224.0.0/12
12 announced prefixes fall inside this one.
Show the 12 prefixes
42.226.7.0/24 AS4837 CHINA169-Backbone42.227.69.0/24 AS4837 CHINA169-Backbone42.228.2.0/24 AS4837 CHINA169-Backbone42.228.3.0/24 AS4837 CHINA169-Backbone42.228.4.0/24 AS4837 CHINA169-Backbone42.228.6.0/24 AS4837 CHINA169-Backbone42.228.7.0/24 AS4837 CHINA169-Backbone42.228.8.0/24 AS4837 CHINA169-Backbone42.228.9.0/24 AS4837 CHINA169-Backbone42.228.11.0/24 AS4837 CHINA169-Backbone42.228.13.0/24 AS4837 CHINA169-Backbone42.235.204.0/24 AS4837 CHINA169-Backbone