--- service: j.root-servers.net start-period: '2015-09-30T00:00:00Z' end-period: '2015-09-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4061329612 dns-udp-queries-received-ipv6: 528950120 dns-tcp-queries-received-ipv4: 65365948 dns-tcp-queries-received-ipv6: 19243098 dns-udp-responses-sent-ipv4: 4011323802 dns-udp-responses-sent-ipv6: 528998385 dns-tcp-responses-sent-ipv4: 64207951 dns-tcp-responses-sent-ipv6: 17379161