ResearchRouting table, looking glass, RPKI & IRR

133.24.0.0/18 Yamagata University

Announced by AS131159 Yamagata University. RPKI valid Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 133.24.0.0/18

Prefix
133.24.0.0/18
Origin
AS131159 AS-YAMAGATAU
RPKI
RPKI valid
Size
16,384 addresses
Less specific
133.24.0.0/16 AS131159 AS-YAMAGATAU
More specifics
0
IRR route objects
1 exact, 2 covering
In RouteViews
2026-10-13 20:02 UTC
Paths

How 133.24.0.0/18 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 2497 2907×3 131159
OriginAS131159 Yamagata University
Origin codeIGP
Communities174:21001 174:22013 36601:150 36601:174 36601:2001
Updated5d 18h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 2497 2907×3 131159
OriginAS131159 Yamagata University
Origin codeIGP
Communities903:900 903:13760
Updated6d 3h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 2907 131159
OriginAS131159 Yamagata University
Origin codeIGP
Communities36295:100
Updated6d 3h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 6939 2907 131159
OriginAS131159 Yamagata University
Origin codeIGP
Communitiesnone
Updated6d 3h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 2497 2907×3 131159
OriginAS131159 Yamagata University
Origin codeIGP
Communities174:21001 174:22013 36295:100 36295:174
Updated9d 20h ago
RPKI

Route origin authorizations

Covered by a ROA authorizing AS131159 to originate 133.24.0.0/16 up to /24. Validate another origin.

ROA prefixMax lengthAuthorized originTrust anchor
133.24.0.0/16/24AS131159 AS-YAMAGATAUAPNIC
IRR

Route objects

Registered in the IRR for this prefix and the ones covering it. Look it up live.

RouteOriginSourceDescriptionMaintained by
133.24.0.0/18AS131159 AS-YAMAGATAUJPIRRYamagata University X-Keiro: sinet-admin@cc.yamagata-u.ac.jpMAINT-AS131159
133.24.0.0/16 coveringAS2907 SINET-ASJPIRRYamagata UniversityMAINT-AS2907
133.24.0.0/16 coveringAS131159 AS-YAMAGATAUJPIRRYamagata University X-Keiro: sinet-admin@cc.yamagata-u.ac.jpMAINT-AS131159
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

133.24.0.0/16 AS131159 AS-YAMAGATAU
Tools

Check 133.24.0.0/18 live

Looking glassIP to ASN APIRPKI APIIRR API