--- service: i.root-servers.net start-period: '2016-02-18T11:01:25Z' end-period: '2016-02-19T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2046209356 dns-udp-queries-received-ipv6: 206278193 dns-tcp-queries-received-ipv4: 5960642 dns-tcp-queries-received-ipv6: 669795 dns-udp-responses-sent-ipv4: 2018941583 dns-udp-responses-sent-ipv6: 205408129 dns-tcp-responses-sent-ipv4: 5971532 dns-tcp-responses-sent-ipv6: 665272