AS51561ICUK Computing Services Limited
United KingdomRegistryRIPE NCCTypeEyeballAt a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS51561 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS51561 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
171
adjacent networks
- Upstreams
- 4124%
- Peers
- 12774%
- Downstreams
- 32%
Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 41.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS2914NTT America, Inc. |  US | Peer | 1,550 | 50 |
| AS13335Cloudflare, Inc. | US | Peer | 974 | 80 |
| AS3356Lumen (Level 3) | US | Peer | 842 | 86 |
| AS174Cogent Communications, LLC | US | Peer | 761 | 88 |
| AS6939Hurricane Electric LLC | US | Peer | 93 | 7 |
| AS25091IP-Max SA |  CH | Peer | 89 | 4 |
| AS18106Viewqwest Pte Ltd |  SG | Peer | 88 | 4 |
| AS38880Micron21 Datacentre Pty Ltd |  AU | Peer | 86 | 2 |
| AS5413Wavenet Limited | GB | Peer | 70 | 2 |
| AS8455atom86 BV |  NL | Peer | 60 | 3 |
Prefixes
All 76The largest blocks AS51561 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 46.33.128.0/19 | 8.2k | 80/80 |
| 46.102.192.0/19 | 8.2k | 80/80 |
| 80.209.128.0/19 | 8.2k | 80/80 |
| 188.240.160.0/19 | 8.2k | 80/80 |
| 205.157.160.0/19 | 8.2k | 80/80 |
| 80.95.192.0/20 | 4.1k | 80/80 |
| 80.209.160.0/20 | 4.1k | 80/80 |
| 138.124.128.0/20 | 4.1k | 80/80 |
| 80.209.176.0/21 | 2k | 80/80 |
| 2.56.84.0/22 | 1k | 80/80 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.