--- service: j.root-servers.net start-period: '2015-09-29T00:00:00Z' end-period: '2015-09-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3992222468 dns-udp-queries-received-ipv6: 532162473 dns-tcp-queries-received-ipv4: 64595463 dns-tcp-queries-received-ipv6: 20360974 dns-udp-responses-sent-ipv4: 3949840897 dns-udp-responses-sent-ipv6: 532221347 dns-tcp-responses-sent-ipv4: 63358422 dns-tcp-responses-sent-ipv6: 18421012