120.92.136.0/21 China Unicom Shanghai network
Announced by AS17621 China Unicom Shanghai network. RPKI valid Seen by 5 of our 5 looking glass sessions. Also originated by AS4811
Summary
What the table says about 120.92.136.0/21
Prefix
Origin
AS17621 CNCGROUP-SH
RPKI
RPKI valid
Size
2,048 addresses
Less specific
More specifics
0
IRR route objects
3 exact, 2 covering
In RouteViews
2026-10-13 17:13 UTC
Paths
How 120.92.136.0/21 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 174 4134 4811
| Origin | AS4811 China Telecom (Group) |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 5d 14h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 4134 4811
| Origin | AS4811 China Telecom (Group) |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 23h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4134 4811
| Origin | AS4811 China Telecom (Group) |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 23h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS17621 to originate 120.92.136.0/21 up to /21. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 120.92.136.0/21 | /21 | AS4811 CHINANET-SHANGHAI-MAN | APNIC |
| 120.92.136.0/21 | /21 | AS17621 CNCGROUP-SH | APNIC |
| 120.92.136.0/21 | /21 | AS59019 BJKSCNET | APNIC |
| 120.92.136.0/21 | /21 | AS137280 KSYUNGLOBAL-AS-AP | APNIC |
| 120.92.128.0/18 | /18 | AS59019 BJKSCNET | 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 |
|---|---|---|---|---|
| 120.92.136.0/21 | AS4134 CHINANET-BACKBONE | LEVEL3 | Proxy-registered route object | XINGXUNTECHLTD-MNT |
| 120.92.136.0/21 | AS17621 CNCGROUP-SH | LEVEL3 | Proxy-registered route object | XINGXUNTECHLTD-MNT |
| 120.92.136.0/21 | AS4811 CHINANET-SHANGHAI-MAN | RADB | SHIDC | MAINT-AS4812 |
| 120.92.128.0/18 covering | AS59019 BJKSCNET | APNIC | Beijing Kingsoft Cloud Internet Technology Co., Ltd. Kingsoft Tower,No.33 Xiao Ying West Road,Haidian District,Beijing,China | MAINT-CNNIC-AP |
| 120.92.128.0/18 covering | AS4134 CHINANET-BACKBONE | LEVEL3 | Proxy-registered route object | XINGXUNTECHLTD-MNT |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.