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AS39923Unix-Solutions BV

BelgiumRegistryRIPE NCC

As of 11th November 2026, AS39923 (Unix-Solutions BV), a network registered in Belgium with RIPE NCC, originates 37 IPv4 prefixes covering 19.2k addresses and 7 IPv6 prefixes. By IPv4 address space that makes it the 7,377th-largest of the 80,747 networks we see originating IPv4, and the 25th-largest of 275 in Belgium. It is seen behind 26 upstream networks, most often AS8220 (COLT) and AS2914 (NTT America, Inc.), and in front of 10 downstream networks. 66% of its announcements have 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

37

IPv6 prefixes

7

IPv4 addresses

19.2k

IPv6 /64s

47.2B

Upstream graph

The networks AS39923 is seen behind, one and two hops out, drawn from real AS paths.

AS39923Toward the internet core
Upstream graph for AS39923: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS39923Unix-Solutions BVThis networkAS2914NTT America, Inc.AS6939Hurricane Electri…AS8220COLTAS13030Init7 (Switzerlan…AS13237euNetworks GmbHAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS20130Depaul UniversityAS132337AxclusiveAS3356Lumen (Level 3)AS1299Arelion (fka. Tel…AS3257GTT Communication…

Networks observed one and two hops upstream of AS39923 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

168

adjacent networks

Upstreams
2615%
Peers
13279%
Downstreams
106%

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

Upstreams of AS39923
NetworkCountryRelationshipPathsVantage pts
AS8220COLTGBPeer2,03995
AS2914NTT America, Inc.USPeer1,19481
AS13237euNetworks GmbHDEPeer42423
AS6939Hurricane Electric LLCUSPeer29044
AS13030Init7 (Switzerland) Ltd.CHPeer784
AS3303Swisscom (Schweiz) AGCHPeer501
AS24940Hetzner Online GmbHDEPeer362
AS8298IPng Networks GmbHCHPeer362
AS49544i3D.net B.VNLPeer352
AS23673Cogetel Online, Cambodia, ISPKHAdjacent202

Prefixes

All 44

The largest blocks AS39923 originates, widest first.

Largest prefixes originated by AS39923
PrefixAddressesVisibility
109.68.0.0/212k76/76
109.68.160.0/212k76/76
109.68.240.0/212k76/76
45.153.152.0/221k76/76
185.35.164.0/221k76/76
185.58.96.0/221k76/76
185.111.204.0/221k76/76
45.153.152.0/2351276/76
45.153.154.0/2351276/76
95.214.28.0/2351276/76

Routing health

How AS39923'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

  • Valid65.9%29
  • Invalid0.0%0
  • No ROA34.1%15

Propagation

  • Globally propagated90% of full-feed peers or more97.7%43
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%2.3%1

Prefix sizes

IPv4 — 37 prefixes

IPv6 — 7 prefixes

  • /2934.4B × /6414.3%1
  • /324.3B × /6442.9%3
  • /4865.5k × /6442.9%3

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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