--- service: i.root-servers.net start-period: '2016-05-04T00:00:00Z' end-period: '2016-05-05T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5462624757 dns-udp-queries-received-ipv6: 432332994 dns-tcp-queries-received-ipv4: 36501516 dns-tcp-queries-received-ipv6: 958961 dns-udp-responses-sent-ipv4: 5390268924 dns-udp-responses-sent-ipv6: 437930186 dns-tcp-responses-sent-ipv4: 36097892 dns-tcp-responses-sent-ipv6: 963155