203.253.240.0/21 Korea Basic Science Institute
Announced by AS9637 Korea Basic Science Institute. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 203.253.240.0/21
Prefix
Origin
AS9637 KBSI-AS-KR-KR
RPKI
RPKI not found
Size
2,048 addresses
Less specific
none
More specifics
0
IRR route objects
3 exact, 0 covering
In RouteViews
2026-10-15 04:02 UTC
Paths
How 203.253.240.0/21 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 17579 1237 9637
| Origin | AS9637 Korea Basic Science Institute |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 7d 2h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 24482 17579 1237 9637
| Origin | AS9637 Korea Basic Science Institute |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 7d 10h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 4766 1237×2 9637
| Origin | AS9637 Korea Basic Science Institute |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 7d 10h 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 |
|---|---|---|---|---|
| 203.253.240.0/21 | AS1237 KREONET-AS-KR-KR | RADB | contact hspark@kordic.re.kr if necessary | MAINT-AS3786 |
| 203.253.240.0/21 | AS9637 KBSI-AS-KR-KR | RADB | SejongTelecom.co.ltd | MAINT-AS4670 |
| 203.253.240.0/21 | AS9318 SKB-AS-KR | REACH | REACH (Customer Route) | MAINT-REACH-NOC |