--- service: i.root-servers.net start-period: '2014-07-03T00:00:00Z' end-period: '2014-07-04T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3137066244 dns-udp-queries-received-ipv6: 194112943 dns-tcp-queries-received-ipv4: 6595606 dns-tcp-queries-received-ipv6: 266291 dns-udp-responses-sent-ipv4: 3081416987 dns-udp-responses-sent-ipv6: 198187369 dns-tcp-responses-sent-ipv4: 6806235 dns-tcp-responses-sent-ipv6: 269131