--- service: j.root-servers.net start-period: '2015-07-29T00:00:00Z' end-period: '2015-07-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4380416426 dns-udp-queries-received-ipv6: 297807420 dns-tcp-queries-received-ipv4: 39885758 dns-tcp-queries-received-ipv6: 22865524 dns-udp-responses-sent-ipv4: 3290816003 dns-udp-responses-sent-ipv6: 298817055 dns-tcp-responses-sent-ipv4: 39354905 dns-tcp-responses-sent-ipv6: 21287629