--- service: i.root-servers.net start-period: '2014-03-12T00:00:00Z' end-period: '2014-03-13T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2812023469 dns-udp-queries-received-ipv6: 183540528 dns-tcp-queries-received-ipv4: 5705393 dns-tcp-queries-received-ipv6: 303614 dns-udp-responses-sent-ipv4: 2751873751 dns-udp-responses-sent-ipv6: 183573310 dns-tcp-responses-sent-ipv4: 5720234 dns-tcp-responses-sent-ipv6: 306716