210.77.0.0/21 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
Announced by AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS). RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 210.77.0.0/21
Prefix
Origin
AS7497 CSTNET-AS-AP
RPKI
RPKI valid
Size
2,048 addresses
Less specific
More specifics
2
IRR route objects
2 exact, 3 covering
In RouteViews
2026-10-12 04:03 UTC
Paths
How 210.77.0.0/21 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 7497
| Origin | AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) |
| Origin code | IGP |
| Communities | 174:21201 174:22039 36601:150 36601:174 36601:2001 |
| Updated | 4d 2h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 174 7497
| Origin | AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 4d 10h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 7497
| Origin | AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 4d 10h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS7497 to originate 210.77.0.0/21 up to /21. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 210.77.0.0/21 | /21 | AS7497 CSTNET-AS-AP | APNIC |
| 210.77.0.0/19 | /19 | AS7497 CSTNET-AS-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 |
|---|---|---|---|---|
| 210.77.0.0/21 | AS7497 CSTNET-AS-AP | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK |
| 210.77.0.0/21 | AS7497 CSTNET-AS-AP | RADB | CMI (Customer Route) | MAINT-AS58453 |
| 210.77.0.0/20 covering | AS7497 CSTNET-AS-AP | APNIC | Chinese Science & Technology Network, YanJiuShengYuan. | MAINT-CSTNET-CN |
| 210.77.0.0/19 covering | AS7497 CSTNET-AS-AP | APNIC | China Science & Technology Network | MAINT-CSTNET-CN |
| 210.77.0.0/19 covering | AS7497 CSTNET-AS-AP | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.
More specific
Prefixes inside 210.77.0.0/21
2 announced prefixes fall inside this one.