210.21.192.0/18 China Unicom Shenzen network
Announced by AS17623 China Unicom Shenzen network. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 210.21.192.0/18
Prefix
Origin
AS17623 CNCGROUP-SZ
RPKI
RPKI valid
Size
16,384 addresses
Less specific
none
More specifics
13
IRR route objects
5 exact, 1 covering
Origin since
2026-10-17 20:01 UTC
Paths
How 210.21.192.0/18 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 4837×2 17623
| Origin | AS17623 China Unicom Shenzen network |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 5d 0h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4837 17623
| Origin | AS17623 China Unicom Shenzen network |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 11d 10h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 4837 17623
| Origin | AS17623 China Unicom Shenzen network |
| Origin code | IGP |
| Communities | 6461:5997 36295:100 36295:6461 |
| Updated | 3d 15h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS17623 to originate 210.21.192.0/18 up to /18. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 210.21.192.0/18 | /18 | AS17623 CNCGROUP-SZ | 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 |
|---|---|---|---|---|
| 210.21.192.0/18 | AS17623 CNCGROUP-SZ | APNIC | China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street | MAINT-CNCGROUP-RR |
| 210.21.192.0/18 | AS9929 CUII | LEVEL3 | CNC Route Object | CHINANETCOM-MNT |
| 210.21.192.0/18 | AS17623 CNCGROUP-SZ | LEVEL3 | Proxy-registered route object | LEVEL3-MNT |
| 210.21.192.0/18 | AS17623 CNCGROUP-SZ | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK |
| 210.21.192.0/18 | AS17623 CNCGROUP-SZ | RADB | CMI (Customer Route) | MAINT-AS58453 |
| 210.21.0.0/16 covering | AS9929 CUII | APNIC | CNC Group CncNet | MAINT-CNCGROUP-RR |
More specific
Prefixes inside 210.21.192.0/18
13 announced prefixes fall inside this one.
Show the 13 prefixes
210.21.209.0/24 AS17623 CNCGROUP-SZ210.21.212.0/24 AS17623 CNCGROUP-SZ210.21.214.0/24 AS17623 CNCGROUP-SZ210.21.217.0/24 AS17623 CNCGROUP-SZ210.21.222.0/24 AS17623 CNCGROUP-SZ210.21.226.0/24 AS17623 CNCGROUP-SZ210.21.229.0/24 AS17623 CNCGROUP-SZ210.21.231.0/24 AS17623 CNCGROUP-SZ210.21.235.0/24 AS17623 CNCGROUP-SZ210.21.237.0/24 AS17623 CNCGROUP-SZ210.21.238.0/24 AS17623 CNCGROUP-SZ210.21.247.0/24 AS17623 CNCGROUP-SZ210.21.251.0/24 AS17623 CNCGROUP-SZ