--- service: i.root-servers.net start-period: '2014-05-31T00:00:00Z' end-period: '2014-06-01T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2409049687 dns-udp-queries-received-ipv6: 228983379 dns-tcp-queries-received-ipv4: 5699215 dns-tcp-queries-received-ipv6: 220195 dns-udp-responses-sent-ipv4: 2354301176 dns-udp-responses-sent-ipv6: 228628963 dns-tcp-responses-sent-ipv4: 5893977 dns-tcp-responses-sent-ipv6: 222887