$ curl -i 'http://keyserver.opensuse.org:11371/pks/lookup?op=get&options=mr&search=0x44D5214B82764ED5' HTTP/1.1 404 Not found Date: Thu, 30 Mar 2017 21:41:06 GMT Content-Type: text/html; charset=UTF-8 Content-Length: 545 Connection: keep-alive Server: sks_www/1.1.6 Cache-Control: no-cache Pragma: no-cache Expires: 0 Access-Control-Allow-Origin: * Proxy-Connection: keep-alive <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" > <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Page not found</title> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <style type="text/css"> /*<![CDATA[*/ .uid { color: green; text-decoration: underline; } .warn { color: red; font-weight: bold; } /*]]>*/ </style></head><body><h1>Page not found</h1>Page not found: //lookup</body></html>