--- service: i.root-servers.net start-period: '2014-09-22T00:00:00Z' end-period: '2014-09-23T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3233012402 dns-udp-queries-received-ipv6: 222911348 dns-tcp-queries-received-ipv4: 6851118 dns-tcp-queries-received-ipv6: 165818 dns-udp-responses-sent-ipv4: 3177474813 dns-udp-responses-sent-ipv6: 227082897 dns-tcp-responses-sent-ipv4: 7065638 dns-tcp-responses-sent-ipv6: 165208