subnet.im

AS15958CETIN Ltd. Belgrade

SerbiaRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS15958 (CETIN Ltd. Belgrade), an access network registered in Serbia with RIPE NCC, originates 9 IPv4 prefixes covering 85k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 2,688th-largest of the 80,747 networks we see originating IPv4, and the 9th-largest of 160 in Serbia. It is seen behind 51 upstream networks, most often AS9002 (RETN Limited) and AS44306 (OMONIA d.o.o.), and in front of 29 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 60% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

9

IPv6 prefixes

1

IPv4 addresses

85k

IPv6 /64s

4.3B

Upstream graph

The networks AS15958 is seen behind, one and two hops out, drawn from real AS paths.

AS15958Toward the internet core
Upstream graph for AS15958: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS15958CETIN Ltd. Belgra…This networkAS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS6461Zayo BandwidthAS9002RETN LimitedAS44306OMONIA d.o.o.AS16552Tiggee LLCAS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS13030Init7 (Switzerlan…AS32590Valve CorporationAS6667Elisa OyjAS3491PCCW Global (HK) …

Networks observed one and two hops upstream of AS15958 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

2,138

adjacent networks

Upstreams
512%
Peers
2,05896%
Downstreams
291%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 51.

Upstreams of AS15958
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer3,47740
AS44306OMONIA d.o.o.HRPeer2,39459
AS1299Arelion (fka. Telia Carrier)SEPeer2,26636
AS6461Zayo BandwidthUSPeer1,99237
AS3356Lumen (Level 3)USPeer1,94631
AS6939Hurricane Electric LLCUSPeer49514
AS174Cogent Communications, LLCUSPeer36714
AS8455atom86 BVNLPeer3262
AS7713PT Telkom Indonesia TbkIDPeer2133
AS3303Swisscom (Schweiz) AGCHPeer1911

Prefixes

The largest blocks AS15958 originates, widest first.

Largest prefixes originated by AS15958
PrefixAddressesVisibility
109.245.0.0/1665.5k76/76
109.106.224.0/204.1k76/76
217.65.192.0/204.1k76/76
109.245.128.0/212k40/76
109.245.144.0/212k40/76
109.245.160.0/212k40/76
109.245.168.0/212k40/76
217.65.200.0/212k76/76
217.65.196.0/221k76/76
2a01:ac80::/324.3B × /6462/63

Routing health

How AS15958'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%10
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more60.0%6
  • Partially propagated40% to 90%40.0%4
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 9 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS15958 started or stopped in this period.

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