AS200454
Tomas Oliveira Valente Leite De Castro — leitecastro.com
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Summary
| Country |
 Portugal
|
| Organization | Tomas Oliveira Valente Leite De Castro |
| Domain | leitecastro.com |
| Number of IPv4 | 2,048 |
| Number of IPv6 | 3.1190× 1026 |
| AS Type | ISP |
| Registry | RIPE NCC |
| Allocated | December 19, 2022 (about 2 years ago) |
| Updated | October 03, 2025 (about 20 days ago) |
IP Ranges
AS200454 announces 4 IPv4 ranges and 3 IPv6 ranges.
That's a total of 2,048 IPv4 addresses and 3.1190× 1026 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 23.147.168.0/24 |
 CASTRO TELECOM LLC
|
256 | ARIN | ALLOCATION |
| 131.143.87.0/24 |
CASTRO TELECOM LLC
|
256 | ARIN | REALLOCATION |
| 199.16.242.0/23 |
CASTRO TELECOM LLC
|
512 | ARIN | REALLOCATION |
| 208.85.8.0/22 |
CASTRO TELECOM LLC
|
1,024 | ARIN | ALLOCATION |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2a07:54c4:1759::/48 |
 Edgesonic Services Gmbh.
|
1.2089× 1024 | RIPE NCC | ASSIGNED |
| 2a0a:6040:aa00::/40 |
Potato Telekom (F.K.A Batatas & Cenouras Telegraph Co)
|
3.0949× 1026 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a0f:b241:10::/48 |
 Free48-as200454
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
Peers
AS200454 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
AS200454 connects to the global Internet via at least 2 upstream providers. In this setup, AS200454 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS200454 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS200454's role in extending Internet access beyond its own infrastructure.