--- service: i.root-servers.net start-period: '2014-07-24T00:00:00Z' end-period: '2014-07-25T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3256799400 dns-udp-queries-received-ipv6: 270187354 dns-tcp-queries-received-ipv4: 8428748 dns-tcp-queries-received-ipv6: 287285 dns-udp-responses-sent-ipv4: 3197209500 dns-udp-responses-sent-ipv6: 269938053 dns-tcp-responses-sent-ipv4: 8369985 dns-tcp-responses-sent-ipv6: 289972