--- service: j.root-servers.net start-period: '2013-12-23T00:00:00Z' end-period: '2013-12-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2581845553 dns-udp-queries-received-ipv6: 156224323 dns-tcp-queries-received-ipv4: 22902783 dns-tcp-queries-received-ipv6: 2526933 dns-udp-responses-sent-ipv4: 2576029068 dns-udp-responses-sent-ipv6: 156183414 dns-tcp-responses-sent-ipv4: 21212915 dns-tcp-responses-sent-ipv6: 309