--- service: j.root-servers.net start-period: '2013-12-04T00:00:00Z' end-period: '2013-12-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2464786150 dns-udp-queries-received-ipv6: 157110119 dns-tcp-queries-received-ipv4: 25563717 dns-tcp-queries-received-ipv6: 4079264 dns-udp-responses-sent-ipv4: 2458176748 dns-udp-responses-sent-ipv6: 157040082 dns-tcp-responses-sent-ipv4: 21095612 dns-tcp-responses-sent-ipv6: 977