Autonomous system
AS21056 ASN-WELCOMEITALIA
Unclassified APNIC
Summary
Vianova
isp residential cable dsl
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.itand netnames likeIT-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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 7 exchanges in 5 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.196.141 |
| LINX LON1 | London, United Kingdom | 195.66.231.180 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.214.79 |
| France-IX Paris | Paris, France | 37.49.238.160 |
| Milan Internet Exchange | Milan, Italy | 217.29.66.43 |
| Roma Internet Exchange Point | Rome, Italy | 193.201.28.41 |
| DE-CIX Marseille | Marseille, France | 185.1.47.117 |
Transit providers
33 upstream, 4 downstream and 45 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 38 prefixes · 98.82K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IT | Italy | 39 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS21056- Registry name
- ASN-WELCOMEITALIA
- Registrant
- Vianova S.p.A
- Abuse contact
- ipnoc@welcomeitalia.it
- Registered
- 2002-05-02
- Last changed
- 2025-12-22
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 95% valid · 42 valid, 2 with no ROA
- ROAs
- 41 authorising AS21056
- ASPA
- no ASPA record
- IRR
- 100% registered · 44 of 44 announcements
- Route objects
- 44 naming AS21056
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere