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AS5391Hrvatski Telekom d.d.

CroatiaRegistryRIPE NCCTypeEyeball

As of 11th November 2026, AS5391 (Hrvatski Telekom d.d.), an access network registered in Croatia with RIPE NCC, originates 47 IPv4 prefixes covering 1.3M addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 389th-largest of the 80,763 networks we see originating IPv4, and the largest of 148 in Croatia. It is seen behind 11 upstream networks, most often AS174 (Cogent Communications, LLC) and AS6939 (Hurricane Electric LLC), and in front of 50 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

47

IPv6 prefixes

2

IPv4 addresses

1.3M

IPv6 /64s

38.7B

Upstream graph

The networks AS5391 is seen behind, one and two hops out, drawn from real AS paths.

AS5391Toward the internet core
Upstream graph for AS5391: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS5391Hrvatski Telekom …This networkAS174Cogent Communicat…AS3320Deutsche Telekom …AS3356Lumen (Level 3)AS6939Hurricane Electri…AS9002RETN LimitedAS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS13030Init7 (Switzerlan…AS37271Workonline Commun…AS20130Depaul UniversityAS132337AxclusiveAS6667Elisa Oyj

Networks observed one and two hops upstream of AS5391 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

125

adjacent networks

Upstreams
119%
Peers
6451%
Downstreams
5040%

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

Upstreams of AS5391
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer18,06574
AS6939Hurricane Electric LLCUSPeer11,093106
AS9002RETN LimitedGBPeer10,49891
AS3320Deutsche Telekom AGDEPeer9,90089
AS3356Lumen (Level 3)USPeer4,26194
AS1299Arelion (fka. Telia Carrier)SEPeer3,39885
AS6762Telecom Italia Sparkle (Seabone)ITPeer1,97535
AS34362Terrakom d.o.o.HRPeer8037
AS205714Telemach Hrvatska d.o.o.HRPeer5226
AS33891Core-Backbone GmbHDEPeer231

Prefixes

All 49

The largest blocks AS5391 originates, widest first.

Largest prefixes originated by AS5391
PrefixAddressesVisibility
78.0.0.0/1665.5k76/77
78.1.0.0/1665.5k77/77
78.2.0.0/1665.5k77/77
78.3.0.0/1665.5k76/77
83.131.0.0/1665.5k77/77
89.172.0.0/1665.5k77/77
93.136.0.0/1665.5k77/77
93.137.0.0/1665.5k77/77
93.138.0.0/1665.5k77/77
93.139.0.0/1665.5k77/77

Routing health

How AS5391'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%49
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%49
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 47 prefixes

IPv6 — 2 prefixes

  • /2934.4B × /6450.0%1
  • /324.3B × /6450.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS5391 started or stopped in this period.

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