Autonomous System
AS21056
Last fetched
AS21056 is operated by ASN-WELCOMEITALIA - Vianova S.p.A, registered in IT, and announces 44 prefixes to 19 BGP neighbours. AS21056 has a reputation score of 8.3 (REPUTABLE); 10 of its 98,816 announced IPv4 addresses appear on threat feeds.
Nutrition Label
Routing footprint
- Announced prefixes
- 44
- BGP neighbours
- 19
- RPKI ROAs
- 41
- MOAS conflicts
- 0
- CAIDA AS-rank
- 2,906
- Customer-cone ASNs
- 9
- Facilities
- 90
- Internet exchanges
- 9
- Customer degree
- 4
- Peer degree
- 144
- Provider degree
- 3
- 45.84.140.0/22
- 45.143.36.0/22
- 45.151.12.0/22
- 45.151.64.0/22
- 46.44.192.0/18
- 78.152.96.0/19
- 79.108.136.0/21
- 79.135.32.0/19
- 80.93.128.0/20
- 80.93.143.0/24
- 83.137.56.0/21
- 87.232.160.0/19
- 87.247.232.0/21
- 87.247.239.0/24
- 91.143.192.0/20
- 91.201.104.0/24
- 91.242.230.0/24
- 94.138.160.0/19
- 103.26.124.0/22
- 103.43.232.0/22
- 103.61.184.0/22
- 103.248.184.0/22
- 109.122.208.0/21
- 144.48.192.0/22
- 185.97.216.0/24
Infrastructure presence
Internet exchanges (9 total)
Facilities (90 total)
- NIKHEF Amsterdam
- Digital Realty London LHR20
- Digital Realty London LHR19
- Equinix LD8 - London, Docklands
- Digital Realty London LON1-3
- Telehouse - London (Docklands North)
- Telehouse - London (Docklands East)
- ITENOS Frankfurt (FRA1)
- Digital Realty Frankfurt FRA1-27
- Digital Realty AMS17 - Amsterdam
- Equinix FR5 - Frankfurt, KleyerStrasse
- Global Switch Amsterdam
- Equinix AM7 - Amsterdam, Kuiperberweg
- Telehouse - Paris 2 (Voltaire - Léon Frot)
- Equinix PA7 - Paris, Energy Park
- Digital Realty Paris PAR2
- Equinix FR7 - Frankfurt, Gutleutstrasse
- Digital Realty London LHR21 (closed)
- Digital Realty AMS3/5/7/8/10 - Amsterdam
- Digital Realty AMS9 - Amsterdam
- Telehouse - Frankfurt
- Digital Realty Frankfurt FRA28 (Closed)
- Digital Realty Marseille MRS1/2/3/4
- NTT Frankfurt 1 Data Center (FRA1)
- NewColo Frankfurt
Route origin authorizations
A sample of 10 of this network’s 41 ROAs.
- 103.248.184.0/22 · max length /24
- 103.248.186.0/24 · max length /24
- 103.26.124.0/22 · max length /22
- 103.43.232.0/22 · max length /22
- 103.61.184.0/22 · max length /22
- 109.122.208.0/21 · max length /21
- 144.48.192.0/22 · max length /32
- 185.125.64.0/22 · max length /22
- 185.158.116.0/22 · max length /32
- 185.170.36.0/22 · max length /32
Upstreams
The networks that most often share an observed BGP path with AS21056.
Blast radius
- Announced IPv4 addresses
- 98,816
- Threat-listed addresses
- 10
- Threat density
- 0.0101 %
- Routed prefixes
- 43
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 19 of this network’s 19 BGP neighbours.
- TWELVE99 - Arelion Sweden AB · AS1299
- NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH · AS1764
- GREEN - green.ch AG · AS1836
- LEVEL3 - Level 3 Parent, LLC · AS3356
- SEABONE-NET - TELECOM ITALIA SPARKLE S.p.A. · AS6762
- HURRICANE - Hurricane Electric LLC · AS6939
- Etisalat-AS - EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC · AS8966
- RETN-AS - RETN Limited · AS9002
- CONVERGE-AS - Converge ICT Solutions Inc. · AS17639
- IP-Max - IP-Max SA · AS25091
- NASSIST-AS - Netassist International EOOD · AS29632
- MEER-AS - meerfarbig GmbH & Co. KG · AS34549
- HOST-SPA - Host SpA · AS47242
- TKSWF-AS - Stadtwerke Feldkirch · AS48362
- EUTPNET - Marcin Gondek · AS56662
- TELNETSYSTEMS - Telnet Systems s.r.l. · AS198320
- comacspait - COMAC S.P.A. · AS208775
- SNAPSYS-AS - SNAP SYSTEM SRL · AS210224
- RISSON - Marc Schmitt · AS212024
Reputation
8.3reputation score (REPUTABLE)
AS21056 (ASN-WELCOMEITALIA - Vianova S.p.A, IT) has a reputation score of 75.2 (REPUTABLE).
- Threat density
- 81.3/100
- Graph metrics
- 90.0/100
- 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
- Vianova S.p.A
- RIR
- RIPE
- Registered
- Thu, 02 May 2002 15:36:10 GMT
- Abuse contact
- ipnoc@welcomeitalia.it
This is the abuse contact WhisperGraph holds for the network.
Threat-feed evidence
Related pages
Pivot from AS21056 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.