Summary

Country
GB 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
GB Zen Internet
65,536 RIPE NCC LEGACY
51.155.0.0/16
GB ZEN20190122-DM-ZEN-ADSL16
65,536 RIPE NCC LEGACY
62.3.64.0/18
GB ADSL
16,384 RIPE NCC ASSIGNED PA
77.104.128.0/18
GB Zen Internet LTD
16,384 RIPE NCC ALLOCATED PA
82.68.0.0/15
GB Zen Internet LTD
131,072 RIPE NCC ASSIGNED PA
82.71.0.0/16
GB ADSL
65,536 RIPE NCC ASSIGNED PA
88.97.0.0/18
GB ADSL
16,384 RIPE NCC ASSIGNED PA
88.97.64.0/19
GB ZEN-PARTITION-CUSTOMER-NETWORKS-33
8,192 RIPE NCC ASSIGNED PA
88.97.96.0/20
GB Zen Internet LTD
4,096 RIPE NCC ALLOCATED PA
88.98.0.0/20
GB Zen Internet LTD
4,096 RIPE NCC ALLOCATED PA
88.98.16.0/23
GB Zen Internet LTD
512 RIPE NCC ALLOCATED PA
88.98.18.0/24
GB Zen Internet
256 RIPE NCC ASSIGNED PA
88.98.21.0/24
GB Zen Internet LTD
256 RIPE NCC ALLOCATED PA
88.98.22.0/23
GB Zen Internet LTD
512 RIPE NCC ALLOCATED PA
88.98.24.0/21
GB Zen Internet
2,048 RIPE NCC LIR-PARTITIONED PA
88.98.32.0/19
GB R.E.S.
8,192 RIPE NCC ASSIGNED PA
88.98.64.0/19
GB Central Animal Pathology Laboratories
8,192 RIPE NCC ASSIGNED PA
88.98.128.0/19
GB Zen Internet
8,192 RIPE NCC ASSIGNED PA
88.98.160.0/21
GB Zen Internet
2,048 RIPE NCC ASSIGNED PA
88.98.170.0/23
GB Zen Internet LTD
512 RIPE NCC ALLOCATED PA
88.98.172.0/22
GB Zen Internet LTD
1,024 RIPE NCC ALLOCATED PA
88.98.176.0/20
GB Zen Internet LTD
4,096 RIPE NCC ALLOCATED PA
91.235.214.0/24
GB Strident LTD
256 RIPE NCC ASSIGNED PI
146.66.64.0/18
GB ZEN-INFRA-ACCESS-PTP
16,384 RIPE NCC ASSIGNED PA
185.6.135.0/24
GB Kijoma Broadband
256 RIPE NCC ASSIGNED PA
185.81.232.0/22
GB Spectrum Internet LTD
1,024 RIPE NCC ALLOCATED PA
185.169.116.0/23
GB PLUSTEL-DSL2
512 RIPE NCC ASSIGNED PA
185.169.118.0/23
GB PLUSTEL-DSL
512 RIPE NCC ASSIGNED PA
185.183.100.0/22
GB 5g Communications Limited
1,024 RIPE NCC ALLOCATED PA
188.122.32.0/20
GB 5g Communications Limited
4,096 RIPE NCC ALLOCATED PA
188.122.48.0/21
GB 5g Communications Limited
2,048 RIPE NCC ALLOCATED PA
188.122.56.0/22
GB 5g Communications Limited
1,024 RIPE NCC ALLOCATED PA
188.122.60.0/23
GB 5g Communications Limited
512 RIPE NCC ALLOCATED PA
188.122.63.0/24
GB Group5G
256 RIPE NCC ASSIGNED PA
193.19.156.0/23
GB GHOST BROADBAND LIMITED
512 RIPE NCC SUB-ALLOCATED PA
212.23.0.0/19
GB Rochdale
8,192 RIPE NCC ASSIGNED PA
217.155.0.0/16
GB Zen Internet LTD
65,536 RIPE NCC ALLOCATED PA
Prefix Organization Size Registry Status
2001:678:7a8::/49
GB WATERGROVE TRUST
6.0446× 1023 RIPE NCC ASSIGNED PI
2001:678:7a8:8000::/49
GB WATERGROVE TRUST
6.0446× 1023 RIPE NCC ASSIGNED PI
2a02:8010::/29
GB Zen Internet
6.3383× 1029 RIPE NCC ASSIGNED

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.

Downstreams

AS13037 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS13037's role in extending Internet access beyond its own infrastructure.

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