--- service: d.root-servers.net start-period: '2016-02-06T00:00:00Z' end-period: '2016-02-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4177271499 dns-udp-queries-received-ipv6: 404989031 dns-tcp-queries-received-ipv4: 18202857 dns-tcp-queries-received-ipv6: 541793 dns-udp-responses-sent-ipv4: 4166982751 dns-udp-responses-sent-ipv6: 404839916 dns-tcp-responses-sent-ipv4: 18185188 dns-tcp-responses-sent-ipv6: 541489