subnet.im

AS13004Serbian Open Exchange DOO

SerbiaRegistryRIPE NCCTypeCarrier

As of 11th November 2026, AS13004 (Serbian Open Exchange DOO), a transit carrier registered in Serbia with RIPE NCC, originates 4 IPv4 prefixes covering 1k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 36,499th-largest of the 80,743 networks we see originating IPv4, and the 76th-largest of 160 in Serbia. It is seen behind 21 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS9002 (RETN Limited), and in front of 35 downstream networks. Every one of its announcements has 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

4

IPv6 prefixes

1

IPv4 addresses

1k

IPv6 /64s

65.5k

Upstream graph

The networks AS13004 is seen behind, one and two hops out, drawn from real AS paths.

AS13004Toward the internet core
Upstream graph for AS13004: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS13004Serbian Open Exch…This networkAS2914NTT America, Inc.AS3223Voxility LLPAS6939Hurricane Electri…AS7768Nuh Ahmet Firat t…AS9002RETN LimitedAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS20130Depaul UniversityAS132337AxclusiveAS3356Lumen (Level 3)AS4849S3 Company LtdAS6667Elisa Oyj

Networks observed one and two hops upstream of AS13004 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

1,032

adjacent networks

Upstreams
212%
Peers
97695%
Downstreams
353%

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

Upstreams of AS13004
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer2,780109
AS9002RETN LimitedGBPeer82080
AS3223Voxility LLPGBPeer71274
AS2914NTT America, Inc.USPeer49831
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer2902
AS3170VeloxServ Communications LtdGBPeer2492
AS24482SG.GSSGPeer2413
AS50869Free-IX Remote PeeringCHPeer2362
AS14537Continent 8 LLCUSPeer1893
AS13237euNetworks GmbHDEAdjacent1121

Prefixes

The largest blocks AS13004 originates, widest first.

Largest prefixes originated by AS13004
PrefixAddressesVisibility
88.218.139.0/2425676/76
91.245.214.0/2425676/76
188.120.127.0/2425676/76
193.105.163.0/2425676/76
2001:7f8:1e::/4865.5k × /6461/63

Routing health

How AS13004'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%5
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%5
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS13004 started or stopped in this period.

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