AS21339Contingency Networks Ltd
United KingdomRegistryRIPE NCCAt a glance
IPv4 prefixes
7
IPv6 prefixes
0
IPv4 addresses
3.3k
IPv6 /64s
0
Upstream graph
The networks AS21339 is seen behind, one and two hops out, drawn from real AS paths.
AS21339Toward the internet core
Networks observed one and two hops upstream of AS21339 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
46
adjacent networks
- Upstreams
- 920%
- Peers
- 3780%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS3170VeloxServ Communications Ltd | GB | Peer | 499 | 73 |
| AS6939Hurricane Electric LLC |  US | Peer | 12 | 2 |
| AS49544i3D.net B.V |  NL | Peer | 7 | 1 |
| AS52075Wifirst S.A.S. |  FR | Peer | 7 | 1 |
| AS22356Durand do Brasil Ltda |  BR | Peer | 7 | 1 |
| AS132337Axclusive |  SG | Peer | 7 | 1 |
| AS39122Blacknight Internet Solutions Limited |  IE | Peer | 7 | 1 |
| AS24482SG.GS | SG | Peer | 7 | 1 |
| AS137409GSL Networks Pty LTD |  AU | Peer | 7 | 1 |
Prefixes
The largest blocks AS21339 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 185.61.164.0/22 | 1k | 80/80 |
| 45.143.120.0/23 | 512 | 80/80 |
| 45.143.122.0/23 | 512 | 80/80 |
| 176.124.68.0/23 | 512 | 80/80 |
| 77.93.143.0/24 | 256 | 80/80 |
| 158.94.215.0/24 | 256 | 80/80 |
| 193.187.99.0/24 | 256 | 80/80 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.