--- service: j.root-servers.net start-period: '2015-01-01T00:00:00Z' end-period: '2015-01-01T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3447099187 dns-udp-queries-received-ipv6: 234403786 dns-tcp-queries-received-ipv4: 46317263 dns-tcp-queries-received-ipv6: 5947828 dns-udp-responses-sent-ipv4: 3458280275 dns-udp-responses-sent-ipv6: 234315435 dns-tcp-responses-sent-ipv4: 46318703 dns-tcp-responses-sent-ipv6: 4774849