What is trk pinterest?

I was playing with DNS on my rooted Android phone and in server logs I could see requests to trk. See what TRK (luisllorens70) has discovered on Pinterest, the world's biggest collection of ideas. See what trk (ttltrk) has discovered on Pinterest, the world's biggest collection of ideas. ℹ Pinterest - Get extensive information about the hostname including website and web server details, DNS resource records, server locations, Reverse DNS. You may already know that Pi-hole lets you block advertisements for every device that connects to your network without the need for any.