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AS20860IOMART CLOUD SERVICES LIMITED

United KingdomRegistryRIPE NCCTypeContent

As of 26th September 2026, AS20860 (IOMART CLOUD SERVICES LIMITED), a content network registered in the United Kingdom with RIPE NCC, originates 207 IPv4 prefixes covering 422k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 788th-largest of the 79,516 networks we see originating IPv4, and the 20th-largest of 2,074 in the United Kingdom. It is seen behind 38 upstream networks, most often AS6461 (Zayo Bandwidth) and AS174 (Cogent Communications, LLC), and in front of 21 downstream networks. 22% of its announcements have 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

207

IPv6 prefixes

16

IPv4 addresses

422k

IPv6 /64s

73.3B

Upstream graph

The networks AS20860 is seen behind, one and two hops out, drawn from real AS paths.

AS20860Toward the internet core
Upstream graph for AS20860: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20860IOMART CLOUD SERV…This networkAS174Cogent Communicat…AS4637Telstra Internati…AS6461Zayo BandwidthAS6667Elisa OyjAS6939Hurricane Electri…AS151326DCConnect Communi…AS16552Tiggee LLCAS1299Arelion (fka. Tel…AS32590Valve CorporationAS2914NTT America, Inc.AS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS20860 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

197

adjacent networks

Upstreams
3819%
Peers
13870%
Downstreams
2111%

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

Upstreams of AS20860
NetworkCountryRelationshipPathsVantage pts
AS6461Zayo BandwidthUSPeer8,31563
AS174Cogent Communications, LLCUSPeer7,68051
AS6939Hurricane Electric LLCUSPeer1,20210
AS4637Telstra International LimitedHKPeer9144
AS6667Elisa OyjFIPeer8144
AS25091IP-Max SACHPeer7785
AS14537Continent 8 LLCUSPeer7744
AS18106Viewqwest Pte LtdSGPeer7524
AS38880Micron21 Datacentre Pty LtdAUPeer6772
AS5413Wavenet LimitedGBPeer4082

Prefixes

All 223

The largest blocks AS20860 originates, widest first.

Largest prefixes originated by AS20860
PrefixAddressesVisibility
78.129.128.0/1732.8k80/81
88.150.128.0/1732.8k80/81
62.233.64.0/1816.4k80/81
87.117.192.0/1816.4k80/81
95.154.192.0/1816.4k80/81
109.169.0.0/1816.4k80/81
5.77.32.0/198.2k80/81
5.152.192.0/198.2k80/81
31.3.224.0/198.2k80/81
37.220.0.0/198.2k80/81

Routing health

How AS20860'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

  • Valid22.0%49
  • Invalid0.0%0
  • No ROA78.0%174

Propagation

  • Globally propagated90% of full-feed peers or more100.0%223
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 207 prefixes

IPv6 — 16 prefixes

  • /2934.4B × /646.3%1
  • /324.3B × /6456.3%9
  • /36268M × /646.3%1
  • /4016.8M × /6412.5%2
  • /424.2M × /646.3%1
  • /4865.5k × /6412.5%2

Recent changes

Announcements that started or stopped since 27th Aug 2026.

  • Withdrawn185.63.241.0/2421st Sept 2026
  • Withdrawn2a00:e120::/3221st Sept 2026
  • Withdrawn2a0d:9780::/3221st Sept 2026
  • Withdrawn81.161.229.0/2421st Sept 2026

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