--- service: d.root-servers.net start-period: '2015-11-22T00:00:00Z' end-period: '2015-11-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3382669412 dns-udp-queries-received-ipv6: 430271969 dns-tcp-queries-received-ipv4: 17910666 dns-tcp-queries-received-ipv6: 477767 dns-udp-responses-sent-ipv4: 3367814906 dns-udp-responses-sent-ipv6: 430034013 dns-tcp-responses-sent-ipv4: 17774613 dns-tcp-responses-sent-ipv6: 477623