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AS203201INFRASTRUCTURE ITALIA COLO S.R.L.

ItalyRegistryRIPE NCC

As of 11th November 2026, AS203201 (INFRASTRUCTURE ITALIA COLO S.R.L.), a network registered in Italy with RIPE NCC, originates 14 IPv4 prefixes covering 9.2k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 11,184th-largest of the 80,743 networks we see originating IPv4, and the 175th-largest of 1,089 in Italy. It is seen behind 19 upstream networks, most often AS1267 (WIND TRE S.P.A.) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 11 downstream networks. 60% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

14

IPv6 prefixes

1

IPv4 addresses

9.2k

IPv6 /64s

34.4B

Upstream graph

The networks AS203201 is seen behind, one and two hops out, drawn from real AS paths.

AS203201Toward the internet core
Upstream graph for AS203201: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS203201INFRASTRUCTURE IT…This networkAS1267WIND TRE S.P.A.AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS6939Hurricane Electri…AS28716Retelit Digital S…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS20130Depaul UniversityAS132337AxclusiveAS6762Telecom Italia Sp…

Networks observed one and two hops upstream of AS203201 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

103

adjacent networks

Upstreams
1918%
Peers
7371%
Downstreams
1111%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS203201
NetworkCountryRelationshipPathsVantage pts
AS1267WIND TRE S.P.A.ITPeer2,39795
AS1299Arelion (fka. Telia Carrier)SEPeer1,81285
AS3356Lumen (Level 3)USPeer24231
AS28716Retelit Digital Services S.p.A.ITPeer21443
AS6939Hurricane Electric LLCUSPeer6412
AS6762Telecom Italia Sparkle (Seabone)ITPeer6013
AS8220COLTGBPeer4242
AS49544i3D.net B.VNLPeer302
AS24482SG.GSSGPeer292
AS132337AxclusiveSGAdjacent272

Prefixes

The largest blocks AS203201 originates, widest first.

Largest prefixes originated by AS203201
PrefixAddressesVisibility
45.144.60.0/221k76/76
45.145.204.0/221k76/76
45.159.60.0/221k76/76
185.142.152.0/221k76/76
185.145.192.0/221k76/76
185.146.128.0/221k76/76
185.152.240.0/221k76/76
193.107.56.0/2351276/76
78.142.240.0/2425676/76
80.80.239.0/2425676/76

Routing health

How AS203201's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid60.0%9
  • Invalid0.0%0
  • No ROA40.0%6

Propagation

  • Globally propagated90% of full-feed peers or more100.0%15
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 14 prefixes

IPv6 — 1 prefixes

  • /2934.4B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS203201 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.