AS5400
British Telecommunications PLC — bt.net
Summary
Country |
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Organization | British Telecommunications PLC |
Domain | bt.net |
Number of IPv4 | 882,176 |
Number of IPv6 | 7.2335× 1031 |
AS Type | ISP |
Registry | RIPE NCC |
Allocated | August 29, 2002 (about 22 years ago) |
Updated | April 01, 2025 (about 13 days ago) |
IP Ranges
AS5400 announces 101 IPv4 ranges and 8 IPv6 ranges.
That's a total of 882,176 IPv4 addresses and 7.2335× 1031 IPv6 addresses.
Prefix | Organization | Size | Registry | Status |
---|---|---|---|---|
8.12.61.0/24 |
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256 | ARIN | REASSIGNMENT |
31.95.0.0/16 |
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65,536 | RIPE NCC | ASSIGNED PA |
31.95.0.0/21 |
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2,048 | RIPE NCC | ASSIGNED PA |
31.95.14.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
31.95.16.0/20 |
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4,096 | RIPE NCC | ASSIGNED PA |
31.95.48.0/21 |
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2,048 | RIPE NCC | ASSIGNED PA |
31.95.56.0/24 |
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256 | RIPE NCC | ASSIGNED PA |
31.95.58.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
31.95.64.0/21 |
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2,048 | RIPE NCC | ASSIGNED PA |
31.95.72.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.80.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.96.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
31.95.128.0/20 |
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4,096 | RIPE NCC | ASSIGNED PA |
31.95.160.0/20 |
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4,096 | RIPE NCC | ASSIGNED PA |
31.95.176.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.184.0/21 |
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2,048 | RIPE NCC | ASSIGNED PA |
31.95.208.0/21 |
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2,048 | RIPE NCC | ASSIGNED PA |
31.95.218.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
31.95.220.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.228.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.232.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.238.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
31.95.240.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.246.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
31.95.248.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
31.95.254.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
46.248.8.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
46.248.10.0/23 |
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512 | RIPE NCC | ASSIGNED PA |
62.5.0.0/17 |
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32,768 | RIPE NCC | ASSIGNED PA |
62.102.0.0/17 |
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32,768 | RIPE NCC | ALLOCATED PA |
62.134.0.0/16 |
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65,536 | RIPE NCC | ALLOCATED PA |
62.172.0.0/21 |
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2,048 | RIPE NCC | LIR-PARTITIONED PA |
62.173.192.0/18 |
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16,384 | RIPE NCC | ALLOCATED PA |
62.180.0.0/16 |
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65,536 | RIPE NCC | ASSIGNED PA |
77.72.239.0/24 |
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256 | RIPE NCC | ASSIGNED PA |
80.255.160.0/24 |
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256 | RIPE NCC | SUB-ALLOCATED PA |
80.255.160.0/20 |
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4,096 | RIPE NCC | SUB-ALLOCATED PA |
80.255.161.0/24 |
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256 | RIPE NCC | ASSIGNED PA |
80.255.162.0/24 |
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256 | RIPE NCC | ASSIGNED PA |
82.138.160.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
82.150.0.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
85.235.109.0/24 |
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256 | RIPE NCC | ALLOCATED PA |
130.41.240.0/24 |
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256 | ARIN | ALLOCATION |
130.41.241.0/24 |
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256 | ARIN | ALLOCATION |
132.244.64.0/21 |
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2,048 | RIPE NCC | LEGACY |
132.244.72.0/21 |
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2,048 | RIPE NCC | LEGACY |
132.244.240.0/24 |
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256 | RIPE NCC | LEGACY |
136.238.84.0/24 |
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256 | ARIN | REASSIGNMENT |
136.238.85.0/24 |
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256 | ARIN | REASSIGNMENT |
136.238.224.0/24 |
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256 | ARIN | REASSIGNMENT |
137.213.54.0/24 |
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256 | RIPE NCC | LEGACY |
137.213.249.0/24 |
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256 | RIPE NCC | LEGACY |
144.95.32.0/19 |
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8,192 | RIPE NCC | LEGACY |
144.95.96.0/19 |
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8,192 | RIPE NCC | LEGACY |
166.49.128.0/17 |
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32,768 | RIPE NCC | LEGACY |
168.252.132.0/24 |
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256 | APNIC | ALLOCATED PORTABLE |
168.252.133.0/24 |
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256 | APNIC | ALLOCATED PORTABLE |
169.129.0.0/16 |
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65,536 | AFRINIC | ASSIGNED PI |
171.33.172.0/24 |
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256 | RIPE NCC | ALLOCATED PA |
185.94.0.0/22 |
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1,024 | RIPE NCC | ALLOCATED PA |
185.249.4.0/24 |
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256 | RIPE NCC | ASSIGNED PA |
192.35.130.0/24 |
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256 | RIPE NCC | LEGACY |
192.109.52.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
193.32.17.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
193.38.169.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
193.141.192.0/19 |
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8,192 | RIPE NCC | ASSIGNED PI |
193.202.26.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
194.33.53.0/24 |
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256 | RIPE NCC | ALLOCATED PA |
194.33.54.0/24 |
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256 | RIPE NCC | ALLOCATED PA |
194.33.55.0/24 |
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256 | RIPE NCC | ALLOCATED PA |
194.50.160.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
194.60.96.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
194.60.99.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
194.74.80.0/21 |
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2,048 | RIPE NCC | ASSIGNED PA |
194.76.40.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
194.107.114.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
194.213.64.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
195.60.182.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
195.60.183.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
195.66.70.0/24 |
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256 | RIPE NCC | ASSIGNED PI |
195.90.64.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
195.99.64.0/20 |
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4,096 | RIPE NCC | ASSIGNED PA |
195.100.0.0/16 |
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65,536 | RIPE NCC | ALLOCATED PA |
195.163.0.0/16 |
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65,536 | RIPE NCC | ALLOCATED PA |
195.171.36.0/22 |
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1,024 | RIPE NCC | ASSIGNED PA |
195.182.96.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
198.178.236.0/24 |
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256 | ARIN | ALLOCATION |
204.52.188.0/24 |
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256 | ARIN | ALLOCATION |
206.73.0.0/16 |
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65,536 | ARIN | REASSIGNMENT |
212.8.160.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
212.21.192.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
212.31.192.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
212.41.128.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
212.108.0.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
212.127.0.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
212.162.192.0/18 |
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16,384 | RIPE NCC | ALLOCATED PA |
213.15.0.0/16 |
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65,536 | RIPE NCC | ASSIGNED PA |
213.137.160.0/19 |
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8,192 | RIPE NCC | ASSIGNED PA |
213.194.0.0/18 |
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16,384 | RIPE NCC | ASSIGNED PA |
213.236.64.0/18 |
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16,384 | RIPE NCC | ALLOCATED PA |
217.67.47.0/24 |
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256 | RIPE NCC | ALLOCATED PA |
Prefix | Organization | Size | Registry | Status |
---|---|---|---|---|
2001:740::/32 |
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7.9228× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
2a00:2000::/23 |
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4.0565× 1031 | RIPE NCC | ALLOCATED-BY-LIR |
2a00:2200::/25 |
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1.0141× 1031 | RIPE NCC | ALLOCATED-BY-RIR |
2a00:2280::/25 |
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1.0141× 1031 | RIPE NCC | ALLOCATED-BY-RIR |
2a00:2300::/25 |
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1.0141× 1031 | RIPE NCC | ALLOCATED-BY-LIR |
2a02:e440::/29 |
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6.3383× 1029 | RIPE NCC | ALLOCATED-BY-RIR |
2a0c:7c80::/29 |
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6.3383× 1029 | RIPE NCC | ASSIGNED |
2a0e:e500:1::/48 |
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1.2089× 1024 | RIPE NCC | ASSIGNED |
Peers
AS5400 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
AS5400 connects to the global Internet via at least 2 upstream providers. In this setup, AS5400 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS5400 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS5400's role in extending Internet access beyond its own infrastructure.