FASTWEB SPA

Fastweb SpA
Data as of 2026-08-16
GLEIF verified
Complete entity footprint
5 linked clusters · 10,650 netblocks · 13,382,301 IPv4 addresses · 194 IPv6 prefixes
This organisation's clusters combined by evidence — shared GLEIF corporate family and shared operating domain vodafonedsl.it — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
549300YFSXCV1SKICL21
Registered name
FASTWEB SPA
Jurisdiction
IT
Ultimate parent
Swisscom AG
5493005SL9HHOXS3B739
Cluster stats
Netblocks9,623 · 9,593,909 IPv4 addresses
IPv6 39 prefixes (largest 2001:b00::/29)
Registered in Italy (2,947) · Germany (49) · Spain (1) · France (1) · United Kingdom (1) · Netherlands (1)
All fragments 9,641 blocks across 2 clusters
Cluster ID222310779
RegistryBGP
Owner jurisdictionIT
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 549300YFSXCV1SKICL21
Shared handles clustered on 33 shared RIR contact/maintainer handles
Registry names 1062 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

8 weekly snapshots · JSON
9,640 -163 netblocks since 2026-07-05
2026-07-05 peak 9,843 2026-08-16

IP Ranges (9,623)

showing 50 of 9,623 — see all — ⬇ export CSV (free export limited to 500 rows — subscribe for the full export)
CIDR Org name Registry Status Confidence
2.16.17.0/24 Fastweb SpA BGP ANNOUNCED ● high
2.19.179.0/24 Fastweb SpA BGP ANNOUNCED ● high
2.32.0.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.32.0.0/16 Fastweb SpA BGP ANNOUNCED ● high
2.32.16.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.32.48.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.32.64.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.32.80.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.32.192.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.32.224.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.33.0.0/17 Fastweb SpA BGP ANNOUNCED ● high
2.33.128.0/17 Fastweb SpA BGP ANNOUNCED ● high
2.33.176.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.34.0.0/15 Fastweb SpA BGP ANNOUNCED ● high
2.35.128.0/18 Fastweb SpA BGP ANNOUNCED ● high
2.35.224.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.35.240.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.36.0.0/14 Fastweb SpA BGP ANNOUNCED ● high
2.38.0.0/17 Fastweb SpA BGP ANNOUNCED ● high
2.38.128.0/17 Fastweb SpA BGP ANNOUNCED ● high
2.39.64.0/18 Fastweb SpA BGP ANNOUNCED ● high
2.39.128.0/17 Fastweb SpA BGP ANNOUNCED ● high
2.40.0.0/16 Fastweb SpA BGP ANNOUNCED ● high
2.40.64.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.40.80.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.40.128.0/18 Fastweb SpA BGP ANNOUNCED ● high
2.40.192.0/18 Fastweb SpA BGP ANNOUNCED ● high
2.41.0.0/16 Fastweb SpA BGP ANNOUNCED ● high
2.42.0.0/16 Fastweb SpA BGP ANNOUNCED ● high
2.42.32.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.42.48.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.42.160.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.42.192.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.43.0.0/16 Fastweb SpA BGP ANNOUNCED ● high
2.44.0.0/16 Fastweb SpA BGP ANNOUNCED ● high
2.44.128.0/18 Fastweb SpA BGP ANNOUNCED ● high
2.44.224.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.45.0.0/16 Fastweb SpA BGP ANNOUNCED ● high
2.45.32.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.45.64.0/18 Fastweb SpA BGP ANNOUNCED ● high
2.45.176.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.45.192.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.45.224.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.46.0.0/15 Fastweb SpA BGP ANNOUNCED ● high
2.47.64.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.47.96.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.47.160.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.47.176.0/20 Fastweb SpA BGP ANNOUNCED ● high
2.47.192.0/19 Fastweb SpA BGP ANNOUNCED ● high
2.47.224.0/20 Fastweb SpA BGP ANNOUNCED ● high

IPv6 ranges (39)

showing the 15 largest allocations
CIDR
2001:b00::/29
2001:b07::/32
2a01:820::/32
2a01:827::/32
2a01:8d0::/32
2001:b07:1000::/36
2001:b07:2000::/36
2001:b07:3000::/36
2001:b07:4000::/36
2001:b07:5000::/36
2001:b07:6000::/36
2001:b07:7000::/36
2001:b07:8000::/36
2001:b07:9000::/36
2001:b07::/36

Customer-delegated space

how is this classified?
Operator infrastructure (named) 3,663 (38.1%)
Customer access pools 3,459 (35.9%)
Unclassified 2,518 (26.2%)

Corporate group (2 confirmed entities)

+43,427 additional unconfirmed candidates not shown — full list (JSON)

Network trust

what's this?
RPKI hygiene: A how networks compare →
97.5% of checked blocks have valid RPKI ROA coverage (1,951 of 2,000, sampled from 9,640)
Possible discrepancies (10)

These blocks are registered to Fastweb SpA but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

195.233.250.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.9.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.49.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.57.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.59.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.63.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.144.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.197.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.212.0/24 /24 authorized for AS1273 — Vodafone Group PLC
195.233.214.0/24 /24 authorized for AS1273 — Vodafone Group PLC

NIC Handles

AKAM1-RIPE-MNT ARCOR-MNT AS12663 AS12874 AS12874 AS201917 AS30722 AS44957 AS8612-MNT DUMY-RIPE DUMY-RIPE EQUINIX-FULFIL-MNT +21 more