AS203937MAREK BZDZIUCH trading as CYFROTEL Sp. J.
PolandRegistryRIPE NCCTypeEyeballAt a glance
IPv4 prefixes
8
IPv6 prefixes
1
IPv4 addresses
3.3k
IPv6 /64s
4.3B
Upstream graph
The networks AS203937 is seen behind, one and two hops out, drawn from real AS paths.
AS203937Toward the internet core
Networks observed one and two hops upstream of AS203937 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
20
adjacent networks
- Upstreams
- 735%
- Peers
- 1260%
- Downstreams
- 15%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS29535Orange Polska Spolka Akcyjna | PL | Peer | 478 | 61 |
| AS5617Orange Polska Spolka Akcyjna | PL | Peer | 146 | 19 |
| AS50607Stowarzyszenie e-Poludnie | PL | Peer | 31 | 31 |
| AS49544i3D.net B.V |  NL | Peer | 8 | 1 |
| AS62081Stowarzyszenie e-Poludnie | PL | Peer | 8 | 1 |
| AS201054Stowarzyszenie e-Poludnie | PL | Peer | 3 | 3 |
| AS24482SG.GS |  SG | Peer | 2 | 2 |
Prefixes
The largest blocks AS203937 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 185.119.120.0/22 | 1k | 80/80 |
| 185.131.240.0/23 | 512 | 80/80 |
| 194.42.118.0/23 | 512 | 80/80 |
| 185.125.4.0/24 | 256 | 80/80 |
| 185.131.242.0/24 | 256 | 80/80 |
| 185.131.243.0/24 | 256 | 80/80 |
| 185.216.172.0/24 | 256 | 80/80 |
| 185.253.233.0/24 | 256 | 80/80 |
| 2a06:dec0::/32 | 4.3B × /64 | 35/62 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.