--- service: d.root-servers.net start-period: '2016-02-19T00:00:00Z' end-period: '2016-02-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4526732990 dns-udp-queries-received-ipv6: 448384171 dns-tcp-queries-received-ipv4: 25553878 dns-tcp-queries-received-ipv6: 1228279 dns-udp-responses-sent-ipv4: 4506988765 dns-udp-responses-sent-ipv6: 448122588 dns-tcp-responses-sent-ipv4: 25526223 dns-tcp-responses-sent-ipv6: 1228142