vcl 4.0; sub vcl_recv { if (req.http.host ~ "^([-0-9a-zA-Z]+)\.([a-zA-Z]+)$") { return (synth (750, "")); } } sub vcl_synth { if (resp.status == 750) { set resp.status = 301; set resp.http.Location = "http://www." + req.http.host + req.url…