AS13037
Zen Internet LTD — zen.co.uk
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Summary
| Country |
 United Kingdom
|
| Organization | Zen Internet LTD |
| Domain | zen.co.uk |
| Number of IPv4 | 531,200 |
| Number of IPv6 | 6.3383× 1029 |
| AS Type | ISP |
| Registry | RIPE NCC |
| Allocated | September 20, 2002 (about 23 years ago) |
| Updated | August 02, 2023 (about 1 year ago) |
IP Ranges
AS13037 announces 37 IPv4 ranges and 3 IPv6 ranges.
That's a total of 531,200 IPv4 addresses and 6.3383× 1029 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 51.148.0.0/16 |
Zen Internet
|
65,536 | RIPE NCC | LEGACY |
| 51.155.0.0/16 |
ZEN20190122-DM-ZEN-ADSL16
|
65,536 | RIPE NCC | LEGACY |
| 62.3.64.0/18 |
ADSL
|
16,384 | RIPE NCC | ASSIGNED PA |
| 77.104.128.0/18 |
Zen Internet LTD
|
16,384 | RIPE NCC | ALLOCATED PA |
| 82.68.0.0/15 |
Zen Internet LTD
|
131,072 | RIPE NCC | ASSIGNED PA |
| 82.71.0.0/16 |
ADSL
|
65,536 | RIPE NCC | ASSIGNED PA |
| 88.97.0.0/18 |
ADSL
|
16,384 | RIPE NCC | ASSIGNED PA |
| 88.97.64.0/19 |
ZEN-PARTITION-CUSTOMER-NETWORKS-33
|
8,192 | RIPE NCC | ASSIGNED PA |
| 88.97.96.0/20 |
Zen Internet LTD
|
4,096 | RIPE NCC | ALLOCATED PA |
| 88.98.0.0/20 |
Zen Internet LTD
|
4,096 | RIPE NCC | ALLOCATED PA |
| 88.98.16.0/23 |
Zen Internet LTD
|
512 | RIPE NCC | ALLOCATED PA |
| 88.98.18.0/24 |
Zen Internet
|
256 | RIPE NCC | ASSIGNED PA |
| 88.98.21.0/24 |
Zen Internet LTD
|
256 | RIPE NCC | ALLOCATED PA |
| 88.98.22.0/23 |
Zen Internet LTD
|
512 | RIPE NCC | ALLOCATED PA |
| 88.98.24.0/21 |
Zen Internet
|
2,048 | RIPE NCC | LIR-PARTITIONED PA |
| 88.98.32.0/19 |
R.E.S.
|
8,192 | RIPE NCC | ASSIGNED PA |
| 88.98.64.0/19 |
Central Animal Pathology Laboratories
|
8,192 | RIPE NCC | ASSIGNED PA |
| 88.98.128.0/19 |
Zen Internet
|
8,192 | RIPE NCC | ASSIGNED PA |
| 88.98.160.0/21 |
Zen Internet
|
2,048 | RIPE NCC | ASSIGNED PA |
| 88.98.170.0/23 |
Zen Internet LTD
|
512 | RIPE NCC | ALLOCATED PA |
| 88.98.172.0/22 |
Zen Internet LTD
|
1,024 | RIPE NCC | ALLOCATED PA |
| 88.98.176.0/20 |
Zen Internet LTD
|
4,096 | RIPE NCC | ALLOCATED PA |
| 91.235.214.0/24 |
Strident LTD
|
256 | RIPE NCC | ASSIGNED PI |
| 146.66.64.0/18 |
ZEN-INFRA-ACCESS-PTP
|
16,384 | RIPE NCC | ASSIGNED PA |
| 185.6.135.0/24 |
Kijoma Broadband
|
256 | RIPE NCC | ASSIGNED PA |
| 185.81.232.0/22 |
Spectrum Internet LTD
|
1,024 | RIPE NCC | ALLOCATED PA |
| 185.169.116.0/23 |
PLUSTEL-DSL2
|
512 | RIPE NCC | ASSIGNED PA |
| 185.169.118.0/23 |
PLUSTEL-DSL
|
512 | RIPE NCC | ASSIGNED PA |
| 185.183.100.0/22 |
5g Communications Limited
|
1,024 | RIPE NCC | ALLOCATED PA |
| 188.122.32.0/20 |
5g Communications Limited
|
4,096 | RIPE NCC | ALLOCATED PA |
| 188.122.48.0/21 |
5g Communications Limited
|
2,048 | RIPE NCC | ALLOCATED PA |
| 188.122.56.0/22 |
5g Communications Limited
|
1,024 | RIPE NCC | ALLOCATED PA |
| 188.122.60.0/23 |
5g Communications Limited
|
512 | RIPE NCC | ALLOCATED PA |
| 188.122.63.0/24 |
Group5G
|
256 | RIPE NCC | ASSIGNED PA |
| 193.19.156.0/23 |
GHOST BROADBAND LIMITED
|
512 | RIPE NCC | SUB-ALLOCATED PA |
| 212.23.0.0/19 |
Rochdale
|
8,192 | RIPE NCC | ASSIGNED PA |
| 217.155.0.0/16 |
Zen Internet LTD
|
65,536 | RIPE NCC | ALLOCATED PA |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2001:678:7a8::/49 |
WATERGROVE TRUST
|
6.0446× 1023 | RIPE NCC | ASSIGNED PI |
| 2001:678:7a8:8000::/49 |
WATERGROVE TRUST
|
6.0446× 1023 | RIPE NCC | ASSIGNED PI |
| 2a02:8010::/29 |
Zen Internet
|
6.3383× 1029 | RIPE NCC | ASSIGNED |
Peers
AS13037 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
AS13037 connects to the global Internet via at least 3 upstream providers. In this setup, AS13037 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.