subnet.im

AS209181Zenex 5ive Limited

United KingdomRegistryRIPE NCC

As of 12th November 2026, AS209181 (Zenex 5ive Limited), a network registered in the United Kingdom with RIPE NCC, originates 44 IPv4 prefixes covering 12.8k addresses and 8 IPv6 prefixes. By IPv4 address space that makes it the 9,371st-largest of the 80,772 networks we see originating IPv4, and the 281st-largest of 2,122 in the United Kingdom. It is seen behind 32 upstream networks, most often AS9002 (RETN Limited) and AS33891 (Core-Backbone GmbH), and in front of 1 downstream network. 92% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. 94% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

44

IPv6 prefixes

8

IPv4 addresses

12.8k

IPv6 /64s

34.4B

Upstream graph

The networks AS209181 is seen behind, one and two hops out, drawn from real AS paths.

AS209181Toward the internet core
Upstream graph for AS209181: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS209181Zenex 5ive LimitedThis networkAS6424EDGOO NETWORKSAS6453TATA Communicatio…AS9002RETN LimitedAS33891Core-Backbone GmbHAS34309Link11 GmbHAS2914NTT America, Inc.AS8220COLTAS32590Valve CorporationAS3356Lumen (Level 3)AS6667Elisa OyjAS24940Hetzner Online Gm…AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS209181 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

175

adjacent networks

Upstreams
3218%
Peers
14281%
Downstreams
11%

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

Upstreams of AS209181
NetworkCountryRelationshipPathsVantage pts
AS9002RETN LimitedGBPeer60730
AS33891Core-Backbone GmbHDEPeer48038
AS34309Link11 GmbHDEPeer43523
AS6453TATA Communications (America) IncUSPeer43521
AS6424EDGOO NETWORKSPTPeer28718
AS3257GTT Communications Inc.USPeer22310
AS174Cogent Communications, LLCUSPeer1538
AS6939Hurricane Electric LLCUSPeer1146
AS6830Liberty Global Europe Holding B.V.EUPeer1127
AS13030Init7 (Switzerland) Ltd.CHPeer904

Prefixes

All 52

The largest blocks AS209181 originates, widest first.

Largest prefixes originated by AS209181
PrefixAddressesVisibility
2.58.192.0/221k78/78
45.90.104.0/221k78/78
2.58.192.0/2425678/78
2.58.193.0/2425678/78
2.58.194.0/2425678/78
2.58.195.0/2425678/78
5.182.49.0/2425678/78
5.252.117.0/2425678/78
5.252.160.0/2425678/78
45.86.92.0/2425678/78

Routing health

How AS209181'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

  • Valid92.3%48
  • Invalid1.9%1
  • No ROA5.8%3

Propagation

  • Globally propagated90% of full-feed peers or more94.2%49
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%5.8%3

Prefix sizes

IPv4 — 44 prefixes

IPv6 — 8 prefixes

  • /2934.4B × /6412.5%1
  • /4865.5k × /6487.5%7

Recent changes

Announcements that started or stopped since 13th Oct 2026.

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