subnet.im

AS210218Open Fiber S.P.A.

ItalyRegistryRIPE NCC

As of 11th November 2026, AS210218 (Open Fiber S.P.A.), a network registered in Italy with RIPE NCC, originates 369 IPv4 prefixes covering 153k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 1,654th-largest of the 80,747 networks we see originating IPv4, and the 23rd-largest of 1,089 in Italy. It is seen behind 11 upstream networks, most often AS6762 (Telecom Italia Sparkle (Seabone)) and AS28716 (Retelit Digital Services S.p.A.). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

369

IPv6 prefixes

2

IPv4 addresses

153k

IPv6 /64s

131k

Upstream graph

The networks AS210218 is seen behind, one and two hops out, drawn from real AS paths.

AS210218Toward the internet core
Upstream graph for AS210218: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS210218Open Fiber S.P.A.This networkAS6762Telecom Italia Sp…AS6939Hurricane Electri…AS13237euNetworks GmbHAS28716Retelit Digital S…AS132337AxclusiveAS2914NTT America, Inc.AS32590Valve CorporationAS20130Depaul UniversityAS3257GTT Communication…AS1299Arelion (fka. Tel…AS9002RETN Limited

Networks observed one and two hops upstream of AS210218 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

57

adjacent networks

Upstreams
1119%
Peers
4681%
Downstreams
00%

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

Upstreams of AS210218
NetworkCountryRelationshipPathsVantage pts
AS6762Telecom Italia Sparkle (Seabone)ITPeer16,512114
AS28716Retelit Digital Services S.p.A.ITPeer8,38174
AS6939Hurricane Electric LLCUSPeer1,69718
AS132337AxclusiveSGAdjacent3541
AS49544i3D.net B.VNLPeer2581
AS13237euNetworks GmbHDEPeer2581
AS24482SG.GSSGPeer2502
AS14537Continent 8 LLCUSPeer1271
AS8529Zain Omantel International FZ-LLCAEPeer1271
AS22356Durand do Brasil LtdaBRPeer101

Prefixes

All 371

The largest blocks AS210218 originates, widest first.

Largest prefixes originated by AS210218
PrefixAddressesVisibility
212.22.128.0/198.2k76/76
212.24.0.0/198.2k76/76
94.156.48.0/212k76/76
178.175.184.0/212k76/76
193.207.16.0/212k76/76
2.59.248.0/221k76/76
31.13.252.0/221k76/76
37.221.120.0/221k76/76
45.12.248.0/221k76/76
45.139.100.0/221k76/76

Routing health

How AS210218'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

  • Valid100.0%371
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more97.6%362
  • Partially propagated40% to 90%2.4%9
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 369 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

27 announced and 0 withdrawn in all; the most recent are shown.

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