--- service: i.root-servers.net start-period: '2014-03-11T00:00:00Z' end-period: '2014-03-12T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2643117953 dns-udp-queries-received-ipv6: 179098353 dns-tcp-queries-received-ipv4: 5588333 dns-tcp-queries-received-ipv6: 304571 dns-udp-responses-sent-ipv4: 2586000480 dns-udp-responses-sent-ipv6: 179180422 dns-tcp-responses-sent-ipv4: 5599260 dns-tcp-responses-sent-ipv6: 307335