AS43037Seznam.cz, a.s.
CzechiaRegistryRIPE NCCAt a glance
IPv4 prefixes
6
IPv6 prefixes
6
IPv4 addresses
3.1k
IPv6 /64s
4.3B
Upstream graph
The networks AS43037 is seen behind, one and two hops out, drawn from real AS paths.
AS43037Toward the internet core
Networks observed one and two hops upstream of AS43037 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
- 3218%
- Peers
- 14682%
- Downstreams
- 11%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS5610O2 Czech Republic, a.s. | CZ | Peer | 338 | 59 |
| AS29208Quantcom, a.s. | CZ | Peer | 205 | 33 |
| AS6939Hurricane Electric LLC |  US | Peer | 73 | 11 |
| AS14537Continent 8 LLC | US | Peer | 21 | 3 |
| AS6424EDGOO NETWORKS |  PT | Peer | 14 | 2 |
| AS8529Zain Omantel International FZ-LLC |  AE | Peer | 14 | 2 |
| AS8298IPng Networks GmbH |  CH | Peer | 14 | 2 |
| AS49544i3D.net B.V |  NL | Peer | 14 | 2 |
| AS52075Wifirst S.A.S. |  FR | Peer | 14 | 2 |
| AS132337Axclusive |  SG | Peer | 14 | 2 |
Prefixes
The largest blocks AS43037 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 185.66.188.0/22 | 1k | 79/80 |
| 77.75.72.0/23 | 512 | 79/80 |
| 77.75.76.0/23 | 512 | 79/80 |
| 77.75.78.0/23 | 512 | 79/80 |
| 77.75.74.0/24 | 256 | 79/80 |
| 77.75.75.0/24 | 256 | 79/80 |
| 2a02:598::/32 | 4.3B × /64 | 60/62 |
| 2a02:598:2::/48 | 65.5k × /64 | 60/62 |
| 2a02:598:a::/48 | 65.5k × /64 | 60/62 |
| 2a02:598:b::/48 | 65.5k × /64 | 60/62 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.