--- service: j.root-servers.net start-period: '2015-04-15T00:00:00Z' end-period: '2015-04-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3289143032 dns-udp-queries-received-ipv6: 288210820 dns-tcp-queries-received-ipv4: 24703847 dns-tcp-queries-received-ipv6: 5258241 dns-udp-responses-sent-ipv4: 3236127254 dns-udp-responses-sent-ipv6: 288196646 dns-tcp-responses-sent-ipv4: 24318680 dns-tcp-responses-sent-ipv6: 4393081