--- service: i.root-servers.net start-period: '2014-03-20T00:00:00Z' end-period: '2014-03-21T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2782277162 dns-udp-queries-received-ipv6: 189503205 dns-tcp-queries-received-ipv4: 6145773 dns-tcp-queries-received-ipv6: 312936 dns-udp-responses-sent-ipv4: 2718859974 dns-udp-responses-sent-ipv6: 189802012 dns-tcp-responses-sent-ipv4: 6161187 dns-tcp-responses-sent-ipv6: 315720