AS21574
Century Telecom LTDA — century.net.br
Summary
| Country |
 Brazil
|
| Organization | Century Telecom LTDA |
| Domain | century.net.br |
| Number of IPv4 | 13,568 |
| Number of IPv6 | 7.9228× 1028 |
| AS Type | ISP |
| Registry | LACNIC |
| Allocated | June 07, 2001 (about 24 years ago) |
| Updated | June 10, 2020 (about 4 years ago) |
IP Ranges
AS21574 announces 5 IPv4 ranges and 1 IPv6 range.
That's a total of 13,568 IPv4 addresses and 7.9228× 1028 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 168.227.200.0/22 |
Century Telecom LTDA
|
1,024 | LACNIC | ALLOCATED |
| 186.249.224.0/20 |
Century Telecom LTDA
|
4,096 | LACNIC | ALLOCATED |
| 187.1.176.0/20 |
Century Telecom LTDA
|
4,096 | LACNIC | ALLOCATED |
| 187.1.178.0/24 |
Century Telecom LTDA
|
256 | LACNIC | ALLOCATED |
| 200.169.0.0/20 |
Century Telecom LTDA
|
4,096 | LACNIC | ALLOCATED |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2804:23ec::/32 |
Century Telecom LTDA
|
7.9228× 1028 | LACNIC | ALLOCATED |
Peers
AS21574 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
AS21574 connects to the global Internet via at least 5 upstream providers. In this setup, AS21574 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS21574 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS21574's role in extending Internet access beyond its own infrastructure.