--- service: j.root-servers.net start-period: '2014-12-20T00:00:00Z' end-period: '2014-12-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2967754147 dns-udp-queries-received-ipv6: 227116967 dns-tcp-queries-received-ipv4: 28993626 dns-tcp-queries-received-ipv6: 5447984 dns-udp-responses-sent-ipv4: 2964436953 dns-udp-responses-sent-ipv6: 227110038 dns-tcp-responses-sent-ipv4: 28974298 dns-tcp-responses-sent-ipv6: 4748869