--- service: j.root-servers.net start-period: '2015-02-18T00:00:00Z' end-period: '2015-02-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3136563969 dns-udp-queries-received-ipv6: 294770755 dns-tcp-queries-received-ipv4: 25784486 dns-tcp-queries-received-ipv6: 4094812 dns-udp-responses-sent-ipv4: 3136223835 dns-udp-responses-sent-ipv6: 294419958 dns-tcp-responses-sent-ipv4: 25539633 dns-tcp-responses-sent-ipv6: 3391128