René's autonomous number (ASN) Lookup Tool

Enter an ASN Number:

BT-UK-AS British Telecommunications PLC (GB)

This AS controls 20076800 IP 4 addresses:

StartEndAddresses
2.24.0.02.31.255.255524288
5.35.192.05.35.199.2552048
5.80.0.05.81.255.255131072
5.81.0.05.81.255.25565536
5.83.212.05.83.212.255256
5.83.213.05.83.213.255256
15.145.20.015.145.23.2551024
31.48.0.031.55.255.255524288
31.64.0.031.79.255.2551048576
31.90.0.031.91.255.255131072
31.92.0.031.93.255.255131072
31.94.0.031.94.255.25565536
31.96.0.031.96.255.25565536
31.99.64.031.99.127.25516384
31.99.128.031.99.191.25516384
31.99.192.031.99.255.25516384
31.100.0.031.103.255.255262144
31.104.0.031.104.255.25565536
31.106.0.031.107.255.255131072
31.112.0.031.115.255.255262144
31.116.0.031.116.255.25565536
31.117.0.031.117.255.25565536
31.118.0.031.118.255.25565536
31.119.0.031.119.255.25565536
31.120.0.031.120.255.25565536
31.121.0.031.121.255.25565536
31.122.0.031.123.255.255131072
31.124.0.031.124.255.25565536
31.126.0.031.127.255.255131072
31.130.240.031.130.241.255512
37.44.229.037.44.229.255256
37.44.230.037.44.230.255256
37.44.231.037.44.231.255256
37.97.112.037.97.115.2551024
37.230.61.037.230.61.255256
45.83.238.045.83.238.255256
45.149.7.045.149.7.255256
45.149.168.045.149.169.255512
45.149.170.045.149.171.255512
46.68.0.046.69.255.255131072
46.68.66.046.68.66.255256
46.248.96.046.248.99.2551024
46.248.124.046.248.125.255512
46.248.126.046.248.127.255512
51.14.0.051.14.255.25565536
51.230.0.051.230.15.2554096
51.230.16.051.230.31.2554096
51.230.32.051.230.47.2554096
51.230.48.051.230.63.2554096
51.230.64.051.230.79.2554096
51.230.80.051.230.95.2554096
51.230.96.051.230.111.2554096
51.230.112.051.230.127.2554096
51.230.255.051.230.255.255256
62.6.0.062.6.255.25565536
62.7.0.062.7.255.25565536
62.172.0.062.172.255.25565536
62.192.124.062.192.125.255512
62.239.0.062.239.255.25565536
62.244.11.062.244.11.255256
62.244.12.062.244.12.255256
62.244.29.062.244.29.255256
62.244.36.062.244.36.255256
62.244.37.062.244.37.255256
62.244.41.062.244.41.255256
62.244.43.062.244.43.255256
62.244.45.062.244.45.255256
62.244.56.062.244.56.255256
72.9.180.072.9.183.2551024
77.90.135.077.90.135.255256
77.90.138.077.90.138.255256
77.90.145.077.90.145.255256
77.90.151.077.90.151.255256
77.90.153.077.90.153.255256
77.90.164.077.90.164.255256
77.90.184.077.90.184.255256
77.94.224.077.94.224.255256
81.128.0.081.143.255.2551048576
81.128.0.081.159.255.2552097152
81.161.52.081.161.55.2551024
82.38.56.082.38.59.2551024
82.41.112.082.41.115.2551024
82.136.54.082.136.55.255512
82.140.134.082.140.134.255256
82.140.138.082.140.138.255256
82.140.143.082.140.143.255256
82.140.170.082.140.170.255256
82.153.33.082.153.33.255256
82.153.181.082.153.181.255256
82.153.190.082.153.190.255256
82.153.238.082.153.238.255256
82.192.112.082.192.127.2554096
83.138.19.083.138.19.255256
84.23.0.084.23.31.2558192
84.46.177.084.46.177.255256
84.46.181.084.46.181.255256
84.46.183.084.46.183.255256
84.46.188.084.46.188.255256
84.46.190.084.46.190.255256
84.46.191.084.46.191.255256
84.46.194.084.46.194.255256
84.55.17.084.55.17.255256
84.55.22.084.55.22.255256
85.88.224.085.88.239.2554096
85.88.240.085.88.241.255512
85.116.11.085.116.11.255256
85.204.160.085.204.163.2551024
85.235.123.085.235.123.255256
86.38.56.086.38.56.255256
86.38.63.086.38.63.255256
86.38.65.086.38.65.255256
86.38.67.086.38.67.255256
86.38.68.086.38.68.255256
86.38.86.086.38.86.255256
86.38.93.086.38.93.255256
86.38.118.086.38.118.255256
86.38.123.086.38.123.255256
86.38.148.086.38.148.255256
86.38.193.086.38.193.255256
86.38.233.086.38.233.255256
86.38.244.086.38.244.255256
86.54.81.086.54.81.255256
86.110.57.086.110.57.255256
86.128.0.086.143.255.2551048576
86.128.0.086.159.255.2552097152
86.128.0.086.191.255.2554194304
89.39.172.089.39.173.255512
89.117.183.089.117.183.255256
89.117.198.089.117.198.255256
89.117.203.089.117.203.255256
89.117.235.089.117.235.255256
89.145.172.089.145.173.255512
91.90.125.091.90.125.255256
91.90.127.091.90.127.255256
91.102.189.091.102.189.255256
91.102.190.091.102.190.255256
91.102.191.091.102.191.255256
91.108.254.091.108.254.255256
91.110.0.091.110.255.25565536
91.111.0.091.111.255.25565536
91.142.128.091.142.128.255256
91.227.78.091.227.78.255256
91.230.16.091.230.16.255256
91.230.40.091.230.40.255256
91.236.216.091.236.217.255512
94.26.64.094.26.65.255512
94.72.248.094.72.255.2552048
94.125.16.094.125.16.255256
94.125.17.094.125.17.255256
94.125.18.094.125.18.255256
94.125.19.094.125.19.255256
94.232.100.094.232.103.2551024
95.144.0.095.151.255.255524288
95.173.59.095.173.59.255256
109.144.0.0109.159.255.2551048576
109.180.0.0109.181.255.255131072
109.205.158.0109.205.158.255256
116.66.140.0116.66.143.2551024
132.146.0.0132.146.255.25565536
132.153.3.0132.153.3.255256
132.153.244.0132.153.244.255256
132.153.245.0132.153.245.255256
132.153.246.0132.153.246.255256
132.153.247.0132.153.247.255256
132.153.248.0132.153.248.255256
132.153.249.0132.153.249.255256
132.153.250.0132.153.250.255256
132.153.251.0132.153.251.255256
132.153.252.0132.153.252.255256
132.153.253.0132.153.253.255256
132.153.254.0132.153.254.255256
138.108.94.0138.108.94.255256
142.205.162.0142.205.163.255512
143.223.132.0143.223.132.255256
144.87.0.0144.87.7.2552048
144.87.16.0144.87.31.2554096
144.87.24.0144.87.27.2551024
144.87.28.0144.87.31.2551024
144.87.128.0144.87.191.25516384
144.177.74.0144.177.75.255512
145.79.172.0145.79.175.2551024
147.78.68.0147.78.71.2551024
147.148.0.0147.151.255.255262144
147.152.0.0147.152.255.25565536
147.189.68.0147.189.71.2551024
147.189.76.0147.189.79.2551024
148.252.3.0148.252.3.255256
148.252.7.0148.252.7.255256
148.253.220.0148.253.221.255512
149.117.130.0149.117.130.255256
149.254.1.0149.254.1.255256
151.240.180.0151.240.183.2551024
151.240.184.0151.240.187.2551024
151.240.188.0151.240.191.2551024
151.240.192.0151.240.195.2551024
151.240.196.0151.240.199.2551024
151.240.200.0151.240.203.2551024
151.241.52.0151.241.55.2551024
151.241.56.0151.241.59.2551024
151.241.60.0151.241.63.2551024
151.241.180.0151.241.183.2551024
151.241.184.0151.241.187.2551024
151.241.188.0151.241.191.2551024
151.241.192.0151.241.195.2551024
151.241.196.0151.241.199.2551024
151.241.200.0151.241.203.2551024
151.244.80.0151.244.83.2551024
151.244.204.0151.244.207.2551024
151.244.208.0151.244.211.2551024
151.245.80.0151.245.83.2551024
151.245.204.0151.245.207.2551024
151.245.208.0151.245.211.2551024
152.114.196.0152.114.196.255256
152.114.220.0152.114.221.255512
152.114.222.0152.114.223.255512
156.146.3.0156.146.3.255256
157.236.254.0157.236.254.255256
157.236.255.0157.236.255.255256
159.180.96.0159.180.127.2558192
159.197.13.0159.197.13.255256
159.197.44.0159.197.44.255256
159.197.45.0159.197.45.255256
159.253.66.0159.253.67.255512
163.5.37.0163.5.37.255256
163.5.67.0163.5.67.255256
163.5.98.0163.5.98.255256
163.5.115.0163.5.115.255256
163.5.122.0163.5.122.255256
163.5.208.0163.5.208.255256
163.5.217.0163.5.217.255256
163.5.222.0163.5.222.255256
163.5.249.0163.5.249.255256
164.38.2.0164.38.2.255256
164.38.12.0164.38.12.255256
164.38.16.0164.38.19.2551024
164.38.31.0164.38.31.255256
164.38.32.0164.38.32.255256
164.38.33.0164.38.33.255256
164.38.34.0164.38.34.255256
164.38.120.0164.38.123.2551024
164.38.134.0164.38.134.255256
164.38.148.0164.38.148.255256
164.38.149.0164.38.149.255256
164.38.156.0164.38.156.255256
164.38.184.0164.38.187.2551024
164.38.196.0164.38.196.255256
164.38.197.0164.38.197.255256
164.134.1.0164.134.1.255256
164.134.134.0164.134.134.255256
164.134.135.0164.134.135.255256
164.134.136.0164.134.136.255256
164.134.137.0164.134.137.255256
164.134.138.0164.134.138.255256
165.120.0.0165.120.255.25565536
167.148.60.0167.148.63.2551024
178.78.106.0178.78.107.255512
178.78.108.0178.78.111.2551024
178.78.112.0178.78.119.2552048
178.78.120.0178.78.127.2552048
178.92.112.0178.92.115.2551024
178.92.180.0178.92.183.2551024
178.93.104.0178.93.107.2551024
178.93.192.0178.93.195.2551024
178.94.244.0178.94.247.2551024
178.95.60.0178.95.63.2551024
178.98.0.0178.99.255.255131072
178.100.0.0178.103.255.255262144
178.106.0.0178.106.255.25565536
178.107.128.0178.107.255.25532768
178.212.56.0178.212.57.255512
185.58.165.0185.58.165.255256
185.68.200.0185.68.203.2551024
185.90.32.0185.90.35.2551024
185.128.205.0185.128.205.255256
185.149.6.0185.149.6.255256
185.156.48.0185.156.48.255256
185.177.64.0185.177.65.255512
185.230.13.0185.230.13.255256
185.230.15.0185.230.15.255256
188.172.160.0188.172.167.2552048
188.172.168.0188.172.175.2552048
192.8.112.0192.8.112.255256
192.8.149.0192.8.149.255256
192.12.73.0192.12.73.255256
192.53.46.0192.53.46.255256
192.65.219.0192.65.219.255256
192.65.221.0192.65.221.255256
192.65.222.0192.65.222.255256
192.65.223.0192.65.223.255256
192.65.224.0192.65.224.255256
192.65.225.0192.65.225.255256
192.65.226.0192.65.226.255256
192.65.227.0192.65.227.255256
192.65.228.0192.65.228.255256
192.152.14.0192.152.14.255256
193.23.32.0193.23.32.255256
193.28.232.0193.28.232.255256
193.32.39.0193.32.39.255256
193.32.46.0193.32.46.255256
193.32.48.0193.32.48.255256
193.33.199.0193.33.199.255256
193.35.158.0193.35.159.255512
193.35.160.0193.35.161.255512
193.35.197.0193.35.197.255256
193.35.220.0193.35.223.2551024
193.36.80.0193.36.80.255256
193.36.240.0193.36.240.255256
193.36.243.0193.36.243.255256
193.36.253.0193.36.253.255256
193.37.142.0193.37.142.255256
193.37.160.0193.37.175.2554096
193.38.192.0193.38.193.255512
193.38.194.0193.38.195.255512
193.38.192.0193.38.223.2558192
193.39.141.0193.39.141.255256
193.84.142.0193.84.142.255256
193.111.18.0193.111.18.255256
193.111.19.0193.111.19.255256
193.113.0.0193.113.255.25565536
193.138.107.0193.138.107.255256
193.187.140.0193.187.143.2551024
193.195.138.0193.195.138.255256
194.32.20.0194.32.23.2551024
194.32.29.0194.32.29.255256
194.32.31.0194.32.31.255256
194.36.68.0194.36.68.255256
194.36.135.0194.36.135.255256
194.59.188.0194.59.188.255256
194.60.136.0194.60.136.255256
194.60.137.0194.60.137.255256
194.60.138.0194.60.138.255256
194.60.139.0194.60.139.255256
194.70.94.0194.70.94.255256
194.72.0.0194.75.255.255262144
194.102.0.0194.102.31.2558192
194.132.24.0194.132.24.255256
194.132.25.0194.132.25.255256
194.155.58.0194.155.58.255256
194.169.32.0194.169.39.2552048
194.189.44.0194.189.44.255256
194.227.72.0194.227.72.255256
194.227.73.0194.227.73.255256
194.227.120.0194.227.120.255256
194.246.78.0194.246.78.255256
195.35.123.0195.35.123.255256
195.88.20.0195.88.20.255256
195.99.0.0195.99.255.25565536
195.104.240.0195.104.240.255256
195.130.3.0195.130.3.255256
195.130.6.0195.130.6.255256
195.130.11.0195.130.11.255256
195.130.12.0195.130.12.255256
195.130.13.0195.130.13.255256
195.130.14.0195.130.14.255256
195.130.15.0195.130.15.255256
195.171.0.0195.171.255.25565536
195.182.62.0195.182.62.255256
195.218.32.0195.218.63.2558192
198.178.235.0198.178.235.255256
198.232.43.0198.232.43.255256
205.239.40.0205.239.41.255512
205.239.42.0205.239.42.255256
206.193.176.0206.193.176.255256
209.101.8.0209.101.9.255512
212.82.0.0212.82.31.2558192
212.140.0.0212.140.255.25565536
212.148.1.0212.148.1.255256
213.1.0.0213.1.255.25565536
213.120.0.0213.123.255.255262144
213.169.196.0213.169.197.255512
213.169.202.0213.169.203.255512
213.190.16.0213.190.17.255512
213.190.18.0213.190.19.255512
213.205.208.0213.205.223.2554096
213.209.146.0213.209.146.255256
213.209.149.0213.209.149.255256
213.209.150.0213.209.150.255256
213.249.188.0213.249.191.2551024
216.120.189.0216.120.189.255256
216.165.88.0216.165.88.255256
217.15.64.0217.15.79.2554096
217.31.9.0217.31.9.255256
217.31.10.0217.31.11.255512
217.32.0.0217.47.255.2551048576
217.177.33.0217.177.33.255256
217.217.36.0217.217.39.2551024
217.217.56.0217.217.59.2551024
217.217.60.0217.217.63.2551024

Source of data

This data was collected from the five Regional Internet Registries (RIR): AfrinIC, APNIC, ARIN, LACNIC and RIPE.
Check your user agent's IP address.
List of autonomous systems in GB
log_id = 113565
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Disclaimer: This dataset is provided "as is" for informational purposes only.
No guarantee is made regarding the accuracy, completeness, or timeliness of the data. The provider makes no warranties, either express or implied, and assumes no legal liability or responsibility for any loss or damage resulting from the use, misuse, or reliance on this dataset. Users are responsible for verifying any results obtained from it and for ensuring that their use complies with applicable laws and regulations.