--- service: i.root-servers.net start-period: '2016-04-24T00:00:00Z' end-period: '2016-04-25T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4763354732 dns-udp-queries-received-ipv6: 411303458 dns-tcp-queries-received-ipv4: 25758354 dns-tcp-queries-received-ipv6: 887645 dns-udp-responses-sent-ipv4: 4796892081 dns-udp-responses-sent-ipv6: 414823379 dns-tcp-responses-sent-ipv4: 25578231 dns-tcp-responses-sent-ipv6: 893726