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AS16164Sohonet Limited

United KingdomRegistryRIPE NCC

As of 24th October 2026, AS16164 (Sohonet Limited), a network registered in the United Kingdom with RIPE NCC, originates 3 IPv4 prefixes covering 2.6k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 23,004th-largest of the 79,642 networks we see originating IPv4, and the 684th-largest of 2,077 in the United Kingdom. It is seen behind 38 upstream networks, most often AS2914 (NTT America, Inc.) and AS6461 (Zayo Bandwidth), and in front of 3 downstream networks. None of its announcements have a valid RPKI ROA. 75% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

3

IPv6 prefixes

1

IPv4 addresses

2.6k

IPv6 /64s

4.3B

Upstream graph

The networks AS16164 is seen behind, one and two hops out, drawn from real AS paths.

AS16164Toward the internet core
Upstream graph for AS16164: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS16164Sohonet LimitedThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS4826Vocus Connect Int…AS6461Zayo BandwidthAS6939Hurricane Electri…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS32590Valve CorporationAS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS16164 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

187

adjacent networks

Upstreams
3820%
Peers
14678%
Downstreams
32%

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

Upstreams of AS16164
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer2,15956
AS6461Zayo BandwidthUSPeer1,87176
AS4826Vocus Connect International BackboneAUPeer64965
AS1299Arelion (fka. Telia Carrier)SEPeer48833
AS6939Hurricane Electric LLCUSPeer25665
AS24482SG.GSSGPeer1294
AS49915Megaport Global AccessGBPeer819
AS4637Telstra International LimitedHKPeer792
AS49544i3D.net B.VNLPeer662
AS58511Swoop (Anycast Global Backbone)AUPeer651

Prefixes

The largest blocks AS16164 originates, widest first.

Largest prefixes originated by AS16164
PrefixAddressesVisibility
94.143.248.0/212k76/76
173.0.175.0/2425676/76
203.83.203.0/2425675/76
2a02:23a8::/324.3B × /6431/63

Routing health

How AS16164'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%4

Propagation

  • Globally propagated90% of full-feed peers or more75.0%3
  • Partially propagated40% to 90%25.0%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 3 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS16164 started or stopped in this period.

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