202.4.128.0/19 China Education and Research Network Center
Announced by AS4538 China Education and Research Network Center. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 202.4.128.0/19
Prefix
Origin
AS4538 ERX-CERNET-BKB
RPKI
RPKI not found
Size
8,192 addresses
Less specific
none
More specifics
2
IRR route objects
2 exact, 1 covering
In RouteViews
2026-10-13 04:03 UTC
Paths
How 202.4.128.0/19 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 4538×4
| Origin | AS4538 China Education and Research Network Center |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 10h 56m ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 58453 4538×4
| Origin | AS4538 China Education and Research Network Center |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 13h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4538×5
| Origin | AS4538 China Education and Research Network Center |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 13h ago |
RPKI
Route origin authorizations
No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.
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 |
|---|---|---|---|---|
| 202.4.128.0/19 | AS4538 ERX-CERNET-BKB | LEVEL3 | Proxy-registered route object | LEVEL3-MNT |
| 202.4.128.0/19 | AS4538 ERX-CERNET-BKB | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 202.4.128.0/18 covering | AS18231 CROSSRIMS-AS-AP | REACH | REACH (Customer Route) | MAINT-REACH-NOC |
More specific
Prefixes inside 202.4.128.0/19
2 announced prefixes fall inside this one.