Zhenyun Sun
AS204921 — as204921.net
Summary
| Country |
 United Kingdom
|
| Organization | Zhenyun Sun |
| Domain | as204921.net |
| Number of IPv4 | 768 |
| Number of IPv6 | 6.6007× 1026 |
| AS Type | Education |
| Registry | RIPE NCC |
| Allocated | October 10, 2025 (about 1 year ago) |
| Updated | September 09, 2026 (about 1 months ago) |
IP Ranges
AS204921 announces 3 IPv4 ranges and 20 IPv6 ranges.
That's a total of 768 IPv4 addresses and 6.6007× 1026 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 177.177.80.0/24 |
 Zhenyun Sun
|
256 | RIPE NCC | ASSIGNED PA |
| 177.177.81.0/24 |
 Zhenyun Sun
|
256 | RIPE NCC | ASSIGNED PA |
| 177.177.83.0/24 |
Zhenyun Sun
|
256 | RIPE NCC | ASSIGNED PA |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2602:f3ff:83::/48 |
Yunzheng.space/orbit - Anycast Services
|
1.2089× 1024 | ARIN | REASSIGNMENT |
| 2a0e:aa07:e250::/44 |
Zhenyun Sun
|
1.9343× 1025 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a0e:aa07:e251::/48 |
 Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a0e:aa07:e252::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a0e:aa07:e253::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a0e:aa07:e256::/48 |
 Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a0e:aa07:e25b::/48 |
 Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:800::/39 |
Zhenyun Sun
|
6.1897× 1026 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:801::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:802::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:803::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:804::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:805::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:806::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:808::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:809::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:80a::/48 |
Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:80b::/48 |
 Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:80c::/48 |
 Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
| 2a12:cb41:80d::/48 |
 Zhenyun Sun
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-LIR |
Peers
AS204921 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
AS204921 connects to the global Internet via at least 10 upstream providers. In this setup, AS204921 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS204921 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.