--- service: j.root-servers.net start-period: '2015-12-25T00:00:00Z' end-period: '2015-12-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3135435680 dns-udp-queries-received-ipv6: 500438643 dns-tcp-queries-received-ipv4: 70657738 dns-tcp-queries-received-ipv6: 1608290 dns-udp-responses-sent-ipv4: 3061586065 dns-udp-responses-sent-ipv6: 502908136 dns-tcp-responses-sent-ipv4: 61984724 dns-tcp-responses-sent-ipv6: 353861