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AS5391Hrvatski Telekom d.d.

CroatiaRegistryRIPE NCCTypeEyeball

As of 27th September 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 385th-largest of the 79,525 networks we see originating IPv4, and the largest of 146 in Croatia. It is seen behind 11 upstream networks, most often AS3356 (Lumen (Level 3)) 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…AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS51907Kanton Zug

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

124

adjacent networks

Upstreams
119%
Peers
6351%
Downstreams
5040%

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

Upstreams of AS5391
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer17,73788
AS6939Hurricane Electric LLCUSPeer13,306112
AS174Cogent Communications, LLCUSPeer10,83870
AS9002RETN LimitedGBPeer10,76088
AS3320Deutsche Telekom AGDEPeer7,80788
AS1299Arelion (fka. Telia Carrier)SEPeer1,36368
AS6762Telecom Italia Sparkle (Seabone)ITPeer54429
AS34362Terrakom d.o.o.HRPeer8841
AS205714Telemach Hrvatska d.o.o.HRPeer6231
AS33891Core-Backbone GmbHDEPeer372

Prefixes

All 49

The largest blocks AS5391 originates, widest first.

Largest prefixes originated by AS5391
PrefixAddressesVisibility
78.0.0.0/1665.5k81/81
78.1.0.0/1665.5k81/81
78.2.0.0/1665.5k81/81
78.3.0.0/1665.5k81/81
83.131.0.0/1665.5k81/81
89.172.0.0/1665.5k81/81
93.136.0.0/1665.5k81/81
93.137.0.0/1665.5k81/81
93.138.0.0/1665.5k81/81
93.139.0.0/1665.5k81/81

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 28th Aug 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.