--- service: d.root-servers.net start-period: '2016-02-22T00:00:00Z' end-period: '2016-02-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4517729988 dns-udp-queries-received-ipv6: 450742408 dns-tcp-queries-received-ipv4: 23858644 dns-tcp-queries-received-ipv6: 1119806 dns-udp-responses-sent-ipv4: 4497478121 dns-udp-responses-sent-ipv6: 450430580 dns-tcp-responses-sent-ipv4: 23828069 dns-tcp-responses-sent-ipv6: 1119764