--- service: j.root-servers.net start-period: '2015-01-13T00:00:00Z' end-period: '2015-01-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3282514972 dns-udp-queries-received-ipv6: 254388237 dns-tcp-queries-received-ipv4: 29349461 dns-tcp-queries-received-ipv6: 5567408 dns-udp-responses-sent-ipv4: 3297554321 dns-udp-responses-sent-ipv6: 254327289 dns-tcp-responses-sent-ipv4: 29649309 dns-tcp-responses-sent-ipv6: 4629309