根据APNIC （亚太互联网络信息中心）数据显示在香港使用的43开头的IP段如下：
42.2.0.0/15;
42.98.0.0/16;
42.99.128.0/22;
42.99.138.0/24;
42.99.139.0/25;
42.99.139.192/26;
42.99.163.0/24;
42.99.165.0/24;
42.99.214.0/24;
42.99.224.0/23;
42.99.226.0/24;
42.200.0.0/16;
43.224.4.0/22;
43.224.48.0/22;
43.224.92.0/22;
43.224.140.0/22;
43.224.148.0/22;
43.224.196.0/22;
43.224.228.0/22;
43.224.232.0/22;
43.224.244.0/22;
43.224.248.0/23;
43.225.8.0/22;
43.225.28.0/22;
43.225.36.0/22;
43.225.44.0/22;
43.225.56.0/22;
43.225.100.0/22;
43.225.104.0/22;
43.225.124.0/22;
43.225.132.0/22;
43.225.140.0/22;
43.225.172.0/22;
43.225.196.0/22;
43.226.4.0/22;
43.226.16.0/21;
43.226.124.0/22;
43.226.231.0/24;
43.227.28.0/22;
43.227.236.0/22;
43.228.88.0/22;
43.228.120.0/22;
43.228.126.0/23;
43.228.200.0/21;
43.228.216.0/22;
43.228.240.0/22;
43.229.4.0/22;
43.229.16.0/23;
43.229.28.0/24;
43.229.36.0/22;
43.229.48.0/21;
43.229.108.0/22;
43.229.112.0/21;
43.229.120.0/22;
43.229.140.0/22;
43.229.144.0/22;
43.229.152.0/22;
43.229.212.0/22;
43.230.12.0/22;
43.230.16.0/22;
43.230.88.0/22;
43.230.97.0/24;
43.230.116.0/22;
43.230.136.0/22;
43.230.164.0/22;
43.230.168.0/22;
43.230.188.0/24;
43.230.190.0/23;
43.230.204.0/22;
43.231.0.0/21;
43.231.16.0/22;
43.231.184.0/22;
43.231.196.0/22;
43.239.64.0/22;
43.239.84.0/22;
43.239.156.0/22;
43.239.164.0/22;
43.239.176.0/22;
43.239.232.0/24;
43.240.12.0/22;
43.240.16.0/22;
43.240.28.0/22;
43.240.36.0/22;
43.240.48.0/22;
43.240.92.0/22;
43.240.116.0/22;
43.240.236.0/22;
43.241.45.0/24;