Autonomous System

AS4665

Last fetched Wed, 21 Oct 2026 13:33:21 GMT

AS4665 is operated by YONSEI-AS-KR-KR - Yonsei University, registered in KR, and announces 33 prefixes to 3 BGP neighbours. AS4665 has a reputation score of 11.9 (NEUTRAL); 1 of its 79,104 announced IPv4 addresses appear on threat feeds.

Nutrition Label

Routing footprint

Announced prefixes: 33
BGP neighbours: 3
RPKI ROAs: 0
MOAS conflicts: 0
CAIDA AS-rank: 13,776
Customer-cone ASNs: 1
Facilities: 0
Internet exchanges: 0
Customer degree: 0
Peer degree: 0
Provider degree: 3

Upstreams

The networks that most often share an observed BGP path with AS4665.

AS34549 · 5 shared paths
AS4766 · 4 shared paths
AS3786 · 3 shared paths
AS17639 · 3 shared paths
AS9318 · 3 shared paths

Blast radius

Announced IPv4 addresses: 79,104
Threat-listed addresses: 1
Threat density: 0.0013 %
Routed prefixes: 33

How much of the internet this network is responsible for, and how much of that address space currently appears on a threat feed. Coverage: computed.

Peering ecosystem

A sample of 3 of this network’s 3 BGP neighbours.

LGDACOM-KR - LG DACOM Corporation · AS3786
KIXS-AS-KR-KR - Korea Telecom · AS4766
SKB-AS-KR - SK Broadband Co Ltd · AS9318

Reputation

11.9reputation score (NEUTRAL)

AS4665 (YONSEI-AS-KR-KR - Yonsei University, KR) has a reputation score of 66.3 (NEUTRAL).

Threat density: 80.8/100
Graph metrics: 55.0/100
Historical behaviour: 85.0/100
Prefix age: 20.0/100

These are reputation signals about the network as a whole, not a threat-feed verdict about a specific address.

Registration

Registered to: Yonsei University
RIR: APNIC
Abuse contact: irt@nic.or.kr

This is the abuse contact WhisperGraph holds for the network.

Threat-feed evidence

Pivot from AS4665 into the prefixes, peers and country it routes for.

Queries

This ASN's full card — routing footprint, peers, conflicts and RIR facts.


MATCH (a:ASN {name: $asn})
OPTIONAL MATCH (a)-[:HAS_NAME]->(an:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(co:COUNTRY)
OPTIONAL MATCH (a)-[:REGISTERED_BY]->(org:ORGANIZATION)
WITH a,
     collect(an.name) AS operatorNames,
     collect(co.name) AS countries,
     collect(org.name) AS organizations
OPTIONAL MATCH (a)-[:ROUTES]->(prefix:ANNOUNCED_PREFIX)
WITH a, operatorNames, countries, organizations,
     collect(prefix.name)[0..25] AS samplePrefixes
OPTIONAL MATCH (a)-[:BGP_NEIGHBOR]-(peer:ASN)
OPTIONAL MATCH (peer)-[:HAS_NAME]->(peern:ASN_NAME)
WITH a, operatorNames, countries, organizations, samplePrefixes,
     collect({asn: peer.name, operator: peern.name})[0..25] AS samplePeers
OPTIONAL MATCH (a)<-[:CONFLICTS_WITH]-(conflict:ANNOUNCED_PREFIX)
WITH a, operatorNames, countries, organizations, samplePrefixes, samplePeers,
     collect(conflict.name)[0..25] AS sampleConflicts
OPTIONAL MATCH (a)-[:HAS_SIGNAL]->(sig:THREAT_SIGNAL_TYPE)
WITH a, operatorNames, countries, organizations, samplePrefixes, samplePeers, sampleConflicts,
     collect(DISTINCT sig.name) AS signals
OPTIONAL MATCH (a)-[:IX_MEMBER]->(ix:INTERNET_EXCHANGE)
WITH a, operatorNames, countries, organizations, samplePrefixes, samplePeers, sampleConflicts, signals,
     collect({id: ix.id, name: ix.name})[0..25] AS sampleExchanges
OPTIONAL MATCH (a)-[:AS_PRESENT_AT]->(fac:FACILITY)
WITH a, operatorNames, countries, organizations, samplePrefixes, samplePeers, sampleConflicts, signals, sampleExchanges,
     collect({id: fac.id, name: fac.name})[0..25] AS sampleFacilities
OPTIONAL MATCH (roa:ROA)-[:ROA_AUTHORIZES_ORIGIN]->(a)
WITH a, operatorNames, countries, organizations, samplePrefixes, samplePeers, sampleConflicts, signals, sampleExchanges, sampleFacilities,
     collect({prefix: roa.prefix, maxLength: roa.maxLength})[0..10] AS sampleRoas
CALL { WITH a MATCH (a)-[:ROUTES]->(p:ANNOUNCED_PREFIX) RETURN count(p) AS prefixCount }
CALL { WITH a MATCH (a)-[:BGP_NEIGHBOR]-(n:ASN) RETURN count(n) AS peerCount }
CALL { WITH a MATCH (a)<-[:CONFLICTS_WITH]-(c:ANNOUNCED_PREFIX) RETURN count(c) AS conflictCount }
CALL { WITH a MATCH (a)-[:ROA_AUTHORIZES_ORIGIN]-(r:ROA) RETURN count(r) AS roaCount }
CALL { WITH a MATCH (a)-[:AS_PRESENT_AT]->(f:FACILITY) RETURN count(f) AS facilityCount }
CALL { WITH a MATCH (a)-[:IX_MEMBER]->(x:INTERNET_EXCHANGE) RETURN count(x) AS ixpCount }
RETURN a.name AS name,
       a.rir AS rir,
       a.orgName AS orgName,
       a.asRank AS asRank,
       a.coneAsns AS coneAsns,
       a.conePrefixes AS conePrefixes,
       a.coneAddresses AS coneAddresses,
       a.registrationDate AS registrationDate,
       a.reputationScore AS reputationScore,
       a.reputationCategory AS reputationCategory,
       a.overallThreatLevel AS overallThreatLevel,
       a.abuseEmail AS abuseEmail,
       a.hijackPostureScore AS hijackPostureScore,
       a.hijackOriginMismatchCount AS hijackOriginMismatchCount,
       a.routeLeakCount AS routeLeakCount,
       a.routeLeakTypes AS routeLeakTypes,
       a.degreeCustomer AS degreeCustomer,
       a.degreePeer AS degreePeer,
       a.degreeProvider AS degreeProvider,
       operatorNames, countries, organizations,
       samplePrefixes, samplePeers, sampleConflicts,
       signals, sampleExchanges, sampleFacilities, sampleRoas,
       prefixCount, peerCount, conflictCount, roaCount, facilityCount, ixpCount

Run yourself →

The five networks that most often share this ASN's observed BGP paths.


MATCH (a:ASN {name: $asn})<-[:BGP_PATH]-(b:BGP_PATH_OBSERVATION)
WITH b LIMIT 200
MATCH (b)-[:BGP_PATH]->(up:ASN)
WHERE up.name <> $asn
WITH up.name AS asn, count(*) AS observations
ORDER BY observations DESC
LIMIT 5
RETURN asn, observations