ResearchRouting table, looking glass, RPKI & IRR

137.189.196.0/24 The Chinese University of Hong Kong

Announced by AS3661 The Chinese University of Hong Kong. RPKI not found Seen by 5 of our 5 looking glass sessions.

Summary

What the table says about 137.189.196.0/24

Prefix
137.189.196.0/24
Origin
AS3661 ERX-CUHKNET
RPKI
RPKI not found
Size
256 addresses
Less specific
137.189.0.0/16 AS3661 ERX-CUHKNET
More specifics
0
IRR route objects
3 exact, 18 covering
In RouteViews
2026-10-16 00:02 UTC
Paths

How 137.189.196.0/24 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 3491 17824 3662 3661
OriginAS3661 The Chinese University of Hong Kong
Origin codeIGP
Communities174:21000 174:22013 36601:150 36601:174 36601:2001
Updated8d 0h ago
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 3491 17824 3662 3661
OriginAS3661 The Chinese University of Hong Kong
Origin codeIGP
Communities903:900 903:13760
Updated8d 8h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 3491 17824 3662 3661
OriginAS3661 The Chinese University of Hong Kong
Origin codeIGP
Communities6461:5997 36295:100 36295:6461
Updated13h 32m ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Jacksonville, FL)Collector-2-COCOA-FL36295 174 3491 17824 3662 3661
OriginAS3661 The Chinese University of Hong Kong
Origin codeIGP
Communities174:21000 174:22013
Updated8d 9h ago
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Orlando, FL)Collector-2-COCOA-FL36295 174 3491 17824 3662 3661
OriginAS3661 The Chinese University of Hong Kong
Origin codeIGP
Communities174:21000 174:22013 36295:100 36295:174
Updated12d 2h 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.

RouteOriginSourceDescriptionMaintained by
137.189.196.0/24AS4641 HKIX-AS-APNTTCOMProxy-registered route objectMAINT-NTT-HK
137.189.196.0/24AS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.196.0/24AS45474 NEXUSGUARD-AS-APRADBNexusguard (Customer Route)MAINT-AS45474
137.189.196.0/23 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.196.0/22 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.192.0/21 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.192.0/20 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.192.0/19 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.192.0/18 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.128.0/17 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.0.0/16 coveringAS3661 ERX-CUHKNETAPNICChinese University of Hong Kong (The) Information Technology Service Centre G/F., Pi-Chiu Building CUHKMAINT-CUHKNET-HK
137.189.0.0/16 coveringAS3661 ERX-CUHKNETNTTCOMCMI IP TransitMAINT-CMI-INT-HK
137.189.0.0/16 coveringAS3662 HARNETNTTCOMProxy-registered route objectMAINT-AS9304
137.189.0.0/16 coveringAS4641 HKIX-AS-APNTTCOMProxy-registered route objectMAINT-NTT-HK
137.189.0.0/16 coveringAS9269 HKBN-AS-APNTTCOMHKBN as object (AS9269)MAINT-HKBN
137.189.0.0/16 coveringAS3661 ERX-CUHKNETRADBHKT (Customer Route)MAINT-AS4515
137.189.0.0/16 coveringAS3662 HARNETRADBHGC (customer route)MAINT-AS9304
137.189.0.0/16 coveringAS9269 HKBN-AS-APRADBHKBN(customer route)MAINT-AS9269
137.189.0.0/16 coveringAS10103 HKBN-AS-APRADBHKBN(customer route)MAINT-AS9269
137.189.0.0/16 coveringAS45474 NEXUSGUARD-AS-APRADBNexusguard (Customer Route)MAINT-AS45474
137.189.0.0/16 coveringAS3662 HARNETREACHREACH (Customer Route)MAINT-REACH-NOC
Less specific

Covering prefixes

Announced prefixes that contain this one, most specific first.

137.189.0.0/16 AS3661 ERX-CUHKNET
Tools

Check 137.189.196.0/24 live

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