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AS57356Highland Network Ltd

United KingdomRegistryRIPE NCCTypeEyeball

As of 24th October 2026, AS57356 (Highland Network Ltd), an access network registered in the United Kingdom with RIPE NCC, originates 33 IPv4 prefixes covering 41k addresses. By IPv4 address space that makes it the 4,859th-largest of the 79,664 networks we see originating IPv4, and the 116th-largest of 2,078 in the United Kingdom. It is seen behind 33 upstream networks, most often AS174 (Cogent Communications, LLC) and AS6939 (Hurricane Electric LLC), and in front of 2 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 94% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

33

IPv6 prefixes

0

IPv4 addresses

41k

IPv6 /64s

0

Upstream graph

The networks AS57356 is seen behind, one and two hops out, drawn from real AS paths.

AS57356Toward the internet core
Upstream graph for AS57356: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS57356Highland Network …This networkAS174Cogent Communicat…AS6939Hurricane Electri…AS18106Viewqwest Pte LtdAS24482SG.GSAS25091IP-Max SAAS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS20130Depaul UniversityAS132337AxclusiveAS215859Hetzner Cloud - S…AS38623Metfone (Viettel …AS8298IPng Networks GmbH

Networks observed one and two hops upstream of AS57356 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

151

adjacent networks

Upstreams
3322%
Peers
11677%
Downstreams
21%

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

Upstreams of AS57356
NetworkCountryRelationshipPathsVantage pts
AS174Cogent Communications, LLCUSPeer1,56875
AS6939Hurricane Electric LLCUSPeer15810
AS24482SG.GSSGPeer593
AS18106Viewqwest Pte LtdSGPeer502
AS25091IP-Max SACHPeer502
AS49544i3D.net B.VNLPeer331
AS3303Swisscom (Schweiz) AGCHPeer331
AS5413Wavenet LimitedGBPeer331
AS3170VeloxServ Communications LtdGBPeer281
AS13237euNetworks GmbHDEPeer281

Prefixes

All 33

The largest blocks AS57356 originates, widest first.

Largest prefixes originated by AS57356
PrefixAddressesVisibility
31.216.0.0/204.1k75/76
86.111.160.0/204.1k75/76
87.117.80.0/204.1k75/76
194.140.208.0/204.1k75/76
31.216.0.0/212k75/76
31.216.8.0/212k75/76
86.111.160.0/212k75/76
91.185.176.0/212k75/76
86.111.168.0/221k75/76
87.117.80.0/221k75/76

Routing health

How AS57356'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%33
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more93.9%31
  • Partially propagated40% to 90%3.0%1
  • Seen by few peersUnder 40%3.0%1

Prefix sizes

IPv4 — 33 prefixes

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS57356 started or stopped in this period.

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