A server for pings. PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING PING