AS39790
Web4u S.R.O. — web4u.cz
Summary
| Country |
 Czechia
|
| Organization | Web4u S.R.O. |
| Domain | web4u.cz |
| Number of IPv4 | 5,632 |
| Number of IPv6 | 7.9228× 1028 |
| AS Type | Hosting |
| Registry | RIPE NCC |
| Allocated | April 25, 2006 (about 19 years ago) |
| Updated | February 14, 2025 (about 2 months ago) |
IP Ranges
AS39790 announces 4 IPv4 ranges and 2 IPv6 ranges.
That's a total of 5,632 IPv4 addresses and 7.9228× 1028 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 81.91.80.0/21 |
Web4u S.R.O.
|
2,048 | RIPE NCC | ASSIGNED PA |
| 81.91.88.0/21 |
Web4u - Network
|
2,048 | RIPE NCC | ASSIGNED PA |
| 185.14.224.0/23 |
Web4u - Customers
|
512 | RIPE NCC | ASSIGNED PA |
| 185.14.224.0/22 |
Web4u - Customers
|
1,024 | RIPE NCC | ASSIGNED PA |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2001:1568::/33 |
Web4u - Network
|
3.9614× 1028 | RIPE NCC | ASSIGNED |
| 2001:1568:8000::/33 |
Web4u S.R.O.
|
3.9614× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
Peers
AS39790 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
AS39790 connects to the global Internet via at least 2 upstream providers. In this setup, AS39790 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS39790 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.