--- service: i.root-servers.net start-period: '2013-06-23T00:00:00Z' end-period: '2013-06-24T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1612642017 dns-udp-queries-received-ipv6: 95222192 dns-tcp-queries-received-ipv4: 3030413 dns-tcp-queries-received-ipv6: 137760 dns-udp-responses-sent-ipv4: 1623167323 dns-udp-responses-sent-ipv6: 101293961 dns-tcp-responses-sent-ipv4: 3070496 dns-tcp-responses-sent-ipv6: 142113