--- service: j.root-servers.net start-period: '2014-03-18T00:00:00Z' end-period: '2014-03-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2881754185 dns-udp-queries-received-ipv6: 225928998 dns-tcp-queries-received-ipv4: 22916114 dns-tcp-queries-received-ipv6: 4328900 dns-udp-responses-sent-ipv4: 2865984264 dns-udp-responses-sent-ipv6: 225758988 dns-tcp-responses-sent-ipv4: 21155788 dns-tcp-responses-sent-ipv6: 988