--- service: j.root-servers.net start-period: '2015-04-19T00:00:00Z' end-period: '2015-04-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3043999722 dns-udp-queries-received-ipv6: 201143082 dns-tcp-queries-received-ipv4: 23238560 dns-tcp-queries-received-ipv6: 4950151 dns-udp-responses-sent-ipv4: 2982425198 dns-udp-responses-sent-ipv6: 201022012 dns-tcp-responses-sent-ipv4: 22876508 dns-tcp-responses-sent-ipv6: 4238181