subnet.im

AS25369Hydra Communications Ltd

United KingdomRegistryRIPE NCCTypeContent

As of 26th September 2026, AS25369 (Hydra Communications Ltd), a content network registered in the United Kingdom with RIPE NCC, originates 295 IPv4 prefixes covering 150k addresses and 18 IPv6 prefixes. By IPv4 address space that makes it the 1,647th-largest of the 79,480 networks we see originating IPv4, and the 36th-largest of 2,074 in the United Kingdom. It is seen behind 52 upstream networks, most often AS3257 (GTT Communications Inc.) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 36 downstream networks. 96% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

295

IPv6 prefixes

18

IPv4 addresses

150k

IPv6 /64s

43B

Upstream graph

The networks AS25369 is seen behind, one and two hops out, drawn from real AS paths.

AS25369Toward the internet core
Upstream graph for AS25369: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS25369Hydra Communicati…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3257GTT Communication…AS6939Hurricane Electri…AS13030Init7 (Switzerlan…AS151326DCConnect Communi…AS8888xTom Pty LtdAS6667Elisa OyjAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul UniversityAS56662Marcin Gondek

Networks observed one and two hops upstream of AS25369 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

382

adjacent networks

Upstreams
5214%
Peers
29477%
Downstreams
369%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 52.

Upstreams of AS25369
NetworkCountryRelationshipPathsVantage pts
AS3257GTT Communications Inc.USPeer9,356124
AS1299Arelion (fka. Telia Carrier)SEPeer9,34075
AS174Cogent Communications, LLCUSPeer3,44852
AS6939Hurricane Electric LLCUSPeer1,63822
AS13030Init7 (Switzerland) Ltd.CHPeer1,0784
AS14537Continent 8 LLCUSPeer9724
AS25091IP-Max SACHPeer9365
AS18106Viewqwest Pte LtdSGPeer9084
AS38880Micron21 Datacentre Pty LtdAUPeer8392
AS49544i3D.net B.VNLPeer5112

Prefixes

All 313

The largest blocks AS25369 originates, widest first.

Largest prefixes originated by AS25369
PrefixAddressesVisibility
81.19.208.0/204.1k81/81
89.191.96.0/204.1k81/81
178.239.160.0/204.1k81/81
217.146.80.0/204.1k81/81
5.226.136.0/212k81/81
46.231.160.0/212k80/81
69.5.168.0/212k81/81
78.143.224.0/212k81/81
109.69.104.0/212k81/81
109.70.144.0/212k81/81

Routing health

How AS25369'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

  • Valid96.5%302
  • Invalid0.3%1
  • No ROA3.2%10

Propagation

  • Globally propagated90% of full-feed peers or more99.7%312
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.3%1

Prefix sizes

IPv4 — 295 prefixes

IPv6 — 18 prefixes

  • /2934.4B × /645.6%1
  • /324.3B × /6411.1%2
  • /4016.8M × /6411.1%2
  • /4865.5k × /6472.2%13

Recent changes

Announcements that started or stopped since 27th Aug 2026.

48 announced and 0 withdrawn in all; the most recent are shown.

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