Autonomous System
AS50522
Last fetched
AS50522 is operated by SEWAN-NL - Sewan Nederland B.V., registered in NL, and announces 12 prefixes to 10 BGP neighbours. AS50522 has a reputation score of 16.1 (NEUTRAL); 5 of its 16,384 announced IPv4 addresses appear on threat feeds.
Nutrition Label
Routing footprint
- Announced prefixes
- 12
- BGP neighbours
- 10
- RPKI ROAs
- 12
- MOAS conflicts
- 0
- CAIDA AS-rank
- 6,529
- Customer-cone ASNs
- 3
- Facilities
- 99
- Internet exchanges
- 5
- Customer degree
- 2
- Peer degree
- 99
- Provider degree
- 2
Routing posture
- Hijack posture score
- 0.04
- Route leaks
- 2
Leak types observed: TYPE4_PEER_TO_PROVIDER.
Infrastructure presence
Facilities (99 total)
- NIKHEF Amsterdam
- Equinix LD8 - London, Docklands
- Telehouse - Paris 2 (Voltaire - Léon Frot)
- Digital Realty London LHR20
- Telehouse - London (Docklands East)
- Telehouse - London (Docklands North)
- Equinix AM8 - Amsterdam, Gyroscoopweg
- Equinix FR7 - Frankfurt, Gutleutstrasse
- Digital Realty AMS3/5/7/8/10 - Amsterdam
- Global Switch Amsterdam
- Equinix AM7 - Amsterdam, Kuiperberweg
- Digital Realty AMS17 - Amsterdam
- Equinix FR5 - Frankfurt, KleyerStrasse
- ITENOS Frankfurt (FRA1)
- Digital Realty Frankfurt FRA1-27
- Digital Realty BRU1 - Brussels
- EdgeConneX Munich (EDCMUC01)
- Telehouse - Frankfurt
- Digital Realty Dusseldorf DUS1-3
- Equinix EN1 - Enschede
- Digital Realty AMS9 - Amsterdam
- NorthC Duesseldorf
- Digital Realty Copenhagen CPH1-3
- Digital Realty Dublin DUB1-2
- GlobalConnect Taastrup 1 (CPH1)
Route origin authorizations
A sample of 10 of this network’s 12 ROAs.
- 109.235.32.0/21 · max length /21
- 185.61.68.0/22 · max length /22
- 2a03:be00::/32 · max length /32
- 81.173.0.0/22 · max length /22
- 81.173.125.0/24 · max length /24
- 81.173.126.0/23 · max length /23
- 81.173.32.0/22 · max length /22
- 81.173.48.0/20 · max length /20
- 81.173.64.0/20 · max length /20
- 81.173.7.0/24 · max length /24
Upstreams
The networks that most often share an observed BGP path with AS50522.
Blast radius
- Announced IPv4 addresses
- 16,384
- Threat-listed addresses
- 5
- Threat density
- 0.0305 %
- Routed prefixes
- 11
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 10 of this network’s 10 BGP neighbours.
- TWELVE99 - Arelion Sweden AB · AS1299
- LEVEL3 - Level 3 Parent, LLC · AS3356
- HURRICANE - Hurricane Electric LLC · AS6939
- OPEN-PEERING-AS - Broadband Hosting B.V. · AS20562
- NEXTPERTISE - Nextpertise B.V. · AS41960
- TKSWF-AS - Stadtwerke Feldkirch · AS48362
- SECUREBIT - Securebit AG · AS58057
- MAXITEL - MaxiTEL Telecom B.V. · AS61349
- AS-24X7ICT - 24x7 Hosting B.V. · AS200342
- ZeroPlex - ZeroPlex B.V. · AS201117
Reputation
16.1reputation score (NEUTRAL)
AS50522 (SEWAN-NL - Sewan Nederland B.V., NL) has a reputation score of 57.8 (NEUTRAL).
- Threat density
- 56.6/100
- Graph metrics
- 65.0/100
- Historical behaviour
- 75.0/100
- 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
- Sewan Nederland B.V.
- RIR
- RIPE
- Registered
- Tue, 02 Feb 2010 14:34:53 GMT
- Abuse contact
- abuse@sewan.nl
This is the abuse contact WhisperGraph holds for the network.
Threat-feed evidence
Related pages
Pivot from AS50522 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, ixpCountRun 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, observationsRun yourself →Or query Whisper from your own LLM workflow via the Whisper MCP server.