--- service: d.root-servers.net start-period: '2016-02-29T00:00:00Z' end-period: '2016-02-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4418113736 dns-udp-queries-received-ipv6: 509010399 dns-tcp-queries-received-ipv4: 25336740 dns-tcp-queries-received-ipv6: 1074011 dns-udp-responses-sent-ipv4: 4394241387 dns-udp-responses-sent-ipv6: 508687456 dns-tcp-responses-sent-ipv4: 25302893 dns-tcp-responses-sent-ipv6: 1073922