subnet.im

AS8400Telekom Srbija a.d.

SerbiaRegistryRIPE NCCTypeEyeball

As of 10th November 2026, AS8400 (Telekom Srbija a.d.), an access network registered in Serbia with RIPE NCC, originates 89 IPv4 prefixes covering 1.1M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 452nd-largest of the 80,733 networks we see originating IPv4, and the largest of 160 in Serbia. It is seen behind 45 upstream networks, most often AS9002 (RETN Limited) and AS6453 (TATA Communications (America) Inc), and in front of 88 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 99% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

89

IPv6 prefixes

3

IPv4 addresses

1.1M

IPv6 /64s

73B

Upstream graph

The networks AS8400 is seen behind, one and two hops out, drawn from real AS paths.

AS8400Toward the internet core
Upstream graph for AS8400: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS8400Telekom Srbija a.…This networkAS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS6453TATA Communicatio…AS9002RETN LimitedAS32590Valve CorporationAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS8220COLTAS35280F5 Networks SARLAS6667Elisa Oyj

Networks observed one and two hops upstream of AS8400 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

450

adjacent networks

Upstreams
4510%
Peers
31770%
Downstreams
8820%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 45.

Upstreams of AS8400
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer10,17134
AS6453TATA Communications (America) IncUSPeer9,33435
AS3356Lumen (Level 3)USPeer6,62734
AS1299Arelion (fka. Telia Carrier)SEPeer6,41343
AS32590Valve CorporationUSPeer2,2154
AS18106Viewqwest Pte LtdSGPeer1,9604
AS6939Hurricane Electric LLCUSPeer1,4049
AS7713PT Telkom Indonesia TbkIDAdjacent1,3602
AS13030Init7 (Switzerland) Ltd.CHPeer1,2564
AS52075Wifirst S.A.S.FRPeer1,1252

Prefixes

All 92

The largest blocks AS8400 originates, widest first.

Largest prefixes originated by AS8400
PrefixAddressesVisibility
93.86.0.0/15131k76/76
109.92.0.0/15131k76/76
178.220.0.0/15131k76/76
79.101.0.0/1665.5k76/76
93.86.0.0/1665.5k76/76
93.87.0.0/1665.5k76/76
178.222.0.0/1665.5k76/76
212.200.0.0/1665.5k76/76
77.46.128.0/1732.8k76/76
178.223.0.0/1732.8k76/76

Routing health

How AS8400'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%92
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more98.9%91
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%1.1%1

Prefix sizes

IPv4 — 89 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6466.7%2
  • /324.3B × /6433.3%1

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.