AS21396
Netconnex Broadband Ltd. — ncuk.net
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Summary
| Country |
 United Kingdom
|
| Organization | Netconnex Broadband Ltd. |
| Domain | ncuk.net |
| Number of IPv4 | 11,520 |
| Number of IPv6 | 2.1392× 1030 |
| AS Type | Hosting |
| Registry | RIPE NCC |
| Allocated | September 17, 2002 (about 23 years ago) |
| Updated | May 07, 2025 (about 5 months ago) |
IP Ranges
AS21396 announces 10 IPv4 ranges and 8 IPv6 ranges.
That's a total of 11,520 IPv4 addresses and 2.1392× 1030 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 5.182.220.0/22 |
Netconnex Broadband Ltd.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 80.249.96.0/20 |
Netconnex Core Network (telehouse London)
|
4,096 | RIPE NCC | ASSIGNED PA |
| 141.0.208.0/20 |
Netconnex Internal Infrastructure
|
4,096 | RIPE NCC | ASSIGNED PA |
| 185.181.253.0/24 |
Whg Hosting Services LTD
|
256 | RIPE NCC | ALLOCATED PA |
| 185.181.254.0/24 |
Whg Hosting Services LTD
|
256 | RIPE NCC | ALLOCATED PA |
| 185.181.255.0/24 |
Whg Hosting Services LTD
|
256 | RIPE NCC | ALLOCATED PA |
| 193.203.210.0/23 |
 THISISUNIVERSE APS
|
512 | RIPE NCC | ASSIGNED PI |
| 193.223.78.0/24 |
Community Dns Limited
|
256 | RIPE NCC | ASSIGNED PI |
| 194.117.248.0/23 |
Lovefilm International Ltd.
|
512 | RIPE NCC | ASSIGNED PI |
| 194.180.187.0/24 |
cdns5
|
256 | RIPE NCC | ASSIGNED PA |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2001:67c:1310::/48 |
THISISUNIVERSE APS
|
1.2089× 1024 | RIPE NCC | ASSIGNED PI |
| 2a02:68::/32 |
NETCONNEX-CORE-1
|
7.9228× 1028 | RIPE NCC | ASSIGNED |
| 2a02:68::/29 |
NETCONNEX-CORE-1
|
6.3383× 1029 | RIPE NCC | ASSIGNED |
| 2a03:480::/32 |
Dotdigital Emea LTD
|
7.9228× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a05:98c0::/29 |
Nexcon.io Aps
|
6.3383× 1029 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a0d:5c00::/32 |
Whg Hosting Services LTD
|
7.9228× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a13:f040::/48 |
Community Dns Limited
|
1.2089× 1024 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a13:f040::/29 |
Community Dns Limited
|
6.3383× 1029 | RIPE NCC | ALLOCATED-BY-RIR |
Peers
AS21396 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
AS21396 connects to the global Internet via at least 3 upstream providers. In this setup, AS21396 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS21396 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS21396's role in extending Internet access beyond its own infrastructure.