--- service: j.root-servers.net start-period: '2015-05-15T00:00:00Z' end-period: '2015-05-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3706686924 dns-udp-queries-received-ipv6: 298548561 dns-tcp-queries-received-ipv4: 34154528 dns-tcp-queries-received-ipv6: 5503047 dns-udp-responses-sent-ipv4: 3613695255 dns-udp-responses-sent-ipv6: 298391456 dns-tcp-responses-sent-ipv4: 33521036 dns-tcp-responses-sent-ipv6: 4135746