--- service: j.root-servers.net start-period: '2015-06-15T00:00:00Z' end-period: '2015-06-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3333942554 dns-udp-queries-received-ipv6: 238067303 dns-tcp-queries-received-ipv4: 26203360 dns-tcp-queries-received-ipv6: 19831616 dns-udp-responses-sent-ipv4: 3321948467 dns-udp-responses-sent-ipv6: 237962050 dns-tcp-responses-sent-ipv4: 25006466 dns-tcp-responses-sent-ipv6: 18731822