- public static bool IsLocalIpAddress(string host)
- {
- try
- { // get host IP addresses
- IPAddress[] hostIPs = Dns.GetHostAddresses(host);
- // get local IP addresses
- IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
- // test if any host IP equals to any local IP or to localhost
- foreach (IPAddress hostIP in hostIPs)
- {
- // is localhost
- if (IPAddress.IsLoopback(hostIP)) return true;
- // is local address
- foreach (IPAddress localIP in localIPs)
- {
- if (hostIP.Equals(localIP)) return true;
- }
- }
- }
- catch { }
- return false;
- }
How to Check Local IP Address
The following method checks if a given host name or IP address is local.