--- service: d.root-servers.net start-period: '2015-10-20T00:00:00Z' end-period: '2015-10-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3112257568 dns-udp-queries-received-ipv6: 389340342 dns-tcp-queries-received-ipv4: 14494419 dns-tcp-queries-received-ipv6: 500613 dns-udp-responses-sent-ipv4: 3096922088 dns-udp-responses-sent-ipv6: 389060320 dns-tcp-responses-sent-ipv4: 14472148 dns-tcp-responses-sent-ipv6: 500308