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AS16204Network Services Ltd.

United KingdomRegistryRIPE NCC

As of 10th November 2026, AS16204 (Network Services Ltd.), a network registered in the United Kingdom with RIPE NCC, originates 2 IPv4 prefixes covering 512 addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 49,308th-largest of the 80,723 networks we see originating IPv4, and the 1,392nd-largest of 2,122 in the United Kingdom. It is seen behind 3 upstream networks, most often AS42831 (UK Dedicated Servers Limited) and AS16276 (OVH SAS). 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

2

IPv6 prefixes

1

IPv4 addresses

512

IPv6 /64s

65.5k

Upstream graph

The networks AS16204 is seen behind, one and two hops out, drawn from real AS paths.

AS16204Toward the internet core
Upstream graph for AS16204: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS16204Network Services …This networkAS16276OVH SASAS35200TransitX LtdAS42831UK Dedicated Serv…AS174Cogent Communicat…AS1299Arelion (fka. Tel…AS9002RETN LimitedAS2914NTT America, Inc.

Networks observed one and two hops upstream of AS16204 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS16204
NetworkCountryRelationshipPathsVantage pts
AS42831UK Dedicated Servers LimitedGBPeer7777
AS16276OVH SASFRPeer7676
AS35200TransitX LtdGBPeer6161

Prefixes

The largest blocks AS16204 originates, widest first.

Largest prefixes originated by AS16204
PrefixAddressesVisibility
141.138.224.0/2425676/76
141.138.226.0/2425676/76
2a00:10e8:100::/4865.5k × /6462/63

Routing health

How AS16204'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%3
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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