subnet.im

AS25369Hydra Communications Ltd

United KingdomRegistryRIPE NCCTypeContent

As of 10th November 2026, AS25369 (Hydra Communications Ltd), a content network registered in the United Kingdom with RIPE NCC, originates 276 IPv4 prefixes covering 146k addresses and 18 IPv6 prefixes. By IPv4 address space that makes it the 1,735th-largest of the 80,723 networks we see originating IPv4, and the 37th-largest of 2,122 in the United Kingdom. It is seen behind 54 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3257 (GTT Communications Inc.), and in front of 39 downstream networks. 91% of its announcements have a valid RPKI ROA; 17 are RPKI-invalid. 93% of its routes reach at least 90% of full-feed peers, and 3 prefixes are also originated by another network.

At a glance

IPv4 prefixes

276

IPv6 prefixes

18

IPv4 addresses

146k

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…AS16552Tiggee LLCAS6667Elisa OyjAS398465Rackdog LLCAS20130Depaul UniversityAS132337AxclusiveAS56662Marcin 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

394

adjacent networks

Upstreams
5414%
Peers
30176%
Downstreams
3910%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 54.

Upstreams of AS25369
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer9,65883
AS3257GTT Communications Inc.USPeer7,780109
AS174Cogent Communications, LLCUSPeer3,53458
AS6939Hurricane Electric LLCUSPeer1,44915
AS13030Init7 (Switzerland) Ltd.CHPeer1,0224
AS14537Continent 8 LLCUSPeer9034
AS25091IP-Max SACHPeer8575
AS18106Viewqwest Pte LtdSGPeer8304
AS49544i3D.net B.VNLPeer4852
AS24482SG.GSSGPeer4632

Prefixes

All 294

The largest blocks AS25369 originates, widest first.

Largest prefixes originated by AS25369
PrefixAddressesVisibility
81.19.208.0/204.1k76/76
89.191.96.0/204.1k76/76
178.239.160.0/204.1k76/76
217.146.80.0/204.1k76/76
5.226.136.0/212k76/76
46.231.160.0/212k75/76
69.5.168.0/212k76/76
78.143.224.0/212k76/76
109.69.104.0/212k76/76
109.70.144.0/212k76/76

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

  • Valid90.8%267
  • Invalid5.8%17
  • No ROA3.4%10

Propagation

  • Globally propagated90% of full-feed peers or more92.5%272
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%7.5%22

Prefix sizes

IPv4 — 276 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 11th Oct 2026.

33 announced and 62 withdrawn in all; the most recent are shown.

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