AS43037
Seznam.cz, A.S. — seznam.cz
Summary
| Country |
 Czechia
|
| Organization | Seznam.cz, A.S. |
| Domain | seznam.cz |
| Number of IPv4 | 3,072 |
| Number of IPv6 | 7.9234× 1028 |
| AS Type | Hosting |
| Registry | RIPE NCC |
| Allocated | May 29, 2007 (about 18 years ago) |
| Updated | November 15, 2017 (about 7 years ago) |
IP Ranges
AS43037 announces 6 IPv4 ranges and 6 IPv6 ranges.
That's a total of 3,072 IPv4 addresses and 7.9234× 1028 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 77.75.72.0/23 |
Seznam.cz, A.S.
|
512 | RIPE NCC | ASSIGNED PA |
| 77.75.74.0/24 |
Seznam.cz
|
256 | RIPE NCC | ASSIGNED PA |
| 77.75.75.0/24 |
Seznam.cz
|
256 | RIPE NCC | ASSIGNED PA |
| 77.75.76.0/23 |
Seznam.cz
|
512 | RIPE NCC | ASSIGNED PA |
| 77.75.78.0/23 |
Seznam.cz
|
512 | RIPE NCC | ASSIGNED PA |
| 185.66.188.0/22 |
SEZNAM-CZ
|
1,024 | RIPE NCC | ASSIGNED PA |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2a02:598::/32 |
Seznam.cz, A.S.
|
7.9228× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a02:598:2::/48 |
DC-Nagano
|
1.2089× 1024 | RIPE NCC | ASSIGNED |
| 2a02:598:a::/48 |
DC-Kokura
|
1.2089× 1024 | RIPE NCC | ASSIGNED |
| 2a02:598:b::/48 |
DC-Nagano-future
|
1.2089× 1024 | RIPE NCC | ASSIGNED |
| 2a02:598:3333::/48 |
DC-Kokura-DNS
|
1.2089× 1024 | RIPE NCC | ASSIGNED |
| 2a02:598:4444::/48 |
DC-Nagano-dns
|
1.2089× 1024 | RIPE NCC | ASSIGNED |
Peers
AS43037 actively fosters the following peering relationships that enhance network performance through direct, settlement-free traffic exchange. Even with a modest number of peers, each connection serves as a strategic asset—optimizing routing, reducing latency, and minimizing transit costs.
Upstreams
AS43037 connects to the global Internet via at least 2 upstream providers. In this setup, AS43037 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS43037 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS43037's role in extending Internet access beyond its own infrastructure.