AS20860IOMART CLOUD SERVICES LIMITED
United KingdomRegistryRIPE NCCTypeContentAs of 10th November 2026, AS20860 (IOMART CLOUD SERVICES LIMITED), a content network registered in the United Kingdom with RIPE NCC, originates 197 IPv4 prefixes covering 418k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 802nd-largest of the 80,733 networks we see originating IPv4, and the 20th-largest of 2,122 in the United Kingdom. It is seen behind 31 upstream networks, most often AS6461 (Zayo Bandwidth) and AS174 (Cogent Communications, LLC), and in front of 21 downstream networks. 20% of its announcements have a valid RPKI ROA; 2 are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS20860 is seen behind, one and two hops out, drawn from real AS paths.
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
179
adjacent networks
- Upstreams
- 3117%
- Peers
- 12771%
- Downstreams
- 2112%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS6461Zayo Bandwidth |  US | Peer | 8,090 | 73 |
| AS174Cogent Communications, LLC | US | Peer | 7,628 | 55 |
| AS6939Hurricane Electric LLC | US | Peer | 1,212 | 12 |
| AS4637Telstra International Limited |  HK | Peer | 932 | 6 |
| AS6667Elisa Oyj |  FI | Peer | 780 | 4 |
| AS14537Continent 8 LLC | US | Peer | 742 | 4 |
| AS25091IP-Max SA |  CH | Peer | 670 | 2 |
| AS18106Viewqwest Pte Ltd |  SG | Peer | 666 | 2 |
| AS5413Wavenet Limited | GB | Peer | 390 | 2 |
| AS8455atom86 BV |  NL | Peer | 390 | 2 |
Prefixes
All 213The largest blocks AS20860 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 78.129.128.0/17 | 32.8k | 75/76 |
| 88.150.128.0/17 | 32.8k | 75/76 |
| 62.233.64.0/18 | 16.4k | 75/76 |
| 87.117.192.0/18 | 16.4k | 75/76 |
| 95.154.192.0/18 | 16.4k | 75/76 |
| 109.169.0.0/18 | 16.4k | 75/76 |
| 5.77.32.0/19 | 8.2k | 75/76 |
| 5.152.192.0/19 | 8.2k | 75/76 |
| 31.3.224.0/19 | 8.2k | 75/76 |
| 37.220.0.0/19 | 8.2k | 75/76 |
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
- Valid19.7%42
- Invalid0.9%2
- No ROA79.3%169
Propagation
- Globally propagated90% of full-feed peers or more97.7%208
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%2.3%5
Prefix sizes
IPv4 — 197 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 12th Oct 2026.
- Announced185.63.241.0/2429th Oct 2026
- Announced216.201.76.0/2429th Oct 2026
- Announced216.201.77.0/2429th Oct 2026
- Announced81.161.229.0/2429th Oct 2026
- Withdrawn206.187.52.0/2215th Oct 2026
- Withdrawn206.187.56.0/2215th Oct 2026
- Withdrawn144.34.87.0/2412th Oct 2026
- Withdrawn162.33.28.0/2412th Oct 2026
- Withdrawn173.240.150.0/2412th Oct 2026
- Withdrawn208.52.146.0/2412th Oct 2026
- Withdrawn216.201.76.0/2412th Oct 2026
- Withdrawn216.201.77.0/2412th Oct 2026
4 announced and 10 withdrawn in all; the most recent are shown.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.