--- service: i.root-servers.net start-period: '2015-07-03T00:00:00Z' end-period: '2015-07-04T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4690706264 dns-udp-queries-received-ipv6: 299145409 dns-tcp-queries-received-ipv4: 15022339 dns-tcp-queries-received-ipv6: 471146 dns-udp-responses-sent-ipv4: 4652101589 dns-udp-responses-sent-ipv6: 299091307 dns-tcp-responses-sent-ipv4: 14703187 dns-tcp-responses-sent-ipv6: 467539