AS3300 British Telecommunications PLC

205.248.0.0/16

206.182.0.0/16

207.117.0.0/16

207.209.0.0/16

209.28.0.0/16

204.231.0.0 ~ 204.231.111.255

204.231.113.0 ~ 204.231.191.255

61.14.0.0/18

63.250.128.0/18

192.237.64.0/18

198.207.64.0/18

199.6.64.0/18

204.140.64.0/18

192.92.18.0 ~ 192.92.63.255

192.157.130.0 ~ 192.157.161.255

203.187.128.0/19

72.29.128.0/20

136.238.238.0 ~ 136.238.241.255

192.92.80.0 ~ 192.92.82.255

185.249.5.0 ~ 185.249.6.255