--- service: j.root-servers.net start-period: '2015-07-15T00:00:00Z' end-period: '2015-07-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3941963291 dns-udp-queries-received-ipv6: 300713119 dns-tcp-queries-received-ipv4: 39838115 dns-tcp-queries-received-ipv6: 24631812 dns-udp-responses-sent-ipv4: 3862550231 dns-udp-responses-sent-ipv6: 300558578 dns-tcp-responses-sent-ipv4: 38675595 dns-tcp-responses-sent-ipv6: 22673095