AS21056 — ASN-WELCOMEITALIA

AS21056 announces 37 IPv4 prefixes covering 90,624 addresses and 1 IPv6 prefixes.

About this network

The AS handle ASN-WELCOMEITALIA is held by Vianova S.p.A.

What it's used for

• The address space carries residential and business access traffic, evidenced by reverse DNS records pointing to ip.welcomeitalia.it and netnames like IT-WELCOMEITALIA-20100901.
• With 90624 IPv4 addresses announced across 37 prefixes and 170 observed neighbours, the ratio indicates a large access network serving end-users rather than a transit provider.

Notable

• All sampled registrants are listed as Vianova S.p.A; Welcome Italia IP NOC, aligning perfectly with the AS holder.
• Vianova is the successor entity to Welcome Italia, a major Italian cable and DSL operator, reflecting the rebranding of the network infrastructure.
• The inventory consists of a mix of large /18 and /19 blocks alongside numerous smaller /21 and /22 prefixes, typical of an ISP aggregating diverse regional allocations.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 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
• 83.137.56.0/21
• 87.247.232.0/21
• 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
• 185.97.216.0/22
• 185.125.64.0/22
• 185.158.116.0/22
• 185.170.36.0/22
• 185.224.60.0/22
• 185.224.104.0/22
• 185.230.92.0/22
• 185.230.192.0/22
• 185.230.232.0/22
• 185.231.160.0/22
• 185.234.164.0/22
• 185.241.20.0/22
• 188.240.32.0/22
• 193.124.240.0/22
• 194.58.216.0/22
• 213.182.64.0/19
• 2a00:14f8::/32

Upstream networks

• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS3356 Level 3 Parent, LLC
• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS37721 Virtual Technologies & Solutions
• AS50628 Leonix Telecom SAS
• AS24482 SG.GS
• AS1836 green.ch AG
• AS48362 Stadtwerke Feldkirch
• AS50673 Serverius Holding B.V.
• AS212024 Marc Schmitt
• AS20766 Association "Gitoyen"
• AS34927 iFog GmbH
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS59919 Brainbox S.r.l.
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS49559 A-Systems Sp. z o.o.
• AS48185 team.blue NV
• AS20485 Joint Stock Company TransTeleCom
• AS293 ESnet
• AS37100 SEACOM Limited
• AS3741 Dimension Data

Downstream networks

• AS47242 Host SpA
• AS208775 COMAC S.P.A.
• AS198320 Telnet Systems s.r.l.
• AS210224 SNAP SYSTEM SRL

Adjacent networks

• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS3356 Level 3 Parent, LLC
• AS47242 Host SpA
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS1299 Arelion Sweden AB
• AS50304 Blix Solutions AS
• AS37721 Virtual Technologies & Solutions
• AS50628 Leonix Telecom SAS
• AS48185 team.blue NV
• AS3741 Dimension Data
• AS208775 COMAC S.P.A.
• AS198320 Telnet Systems s.r.l.
• AS20485 Joint Stock Company TransTeleCom
• AS34927 iFog GmbH
• AS48362 Stadtwerke Feldkirch
• AS24482 SG.GS
• AS20766 Association "Gitoyen"
• AS12552 GlobalConnect AB
• AS59919 Brainbox S.r.l.
• AS37100 SEACOM Limited
• AS17639 Converge ICT Solutions Inc.
• AS57463 NetIX Communications JSC
• AS50300 CustodianDC Limited
• AS1836 green.ch AG

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• France-IX Paris — Paris, France
• Milan Internet Exchange — Milan, Italy
• Roma Internet Exchange Point — Rome, Italy
• DE-CIX Marseille — Marseille, France