--- service: j.root-servers.net start-period: '2013-12-28T00:00:00Z' end-period: '2013-12-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2332791915 dns-udp-queries-received-ipv6: 159404686 dns-tcp-queries-received-ipv4: 21770812 dns-tcp-queries-received-ipv6: 2624472 dns-udp-responses-sent-ipv4: 2325819322 dns-udp-responses-sent-ipv6: 159358671 dns-tcp-responses-sent-ipv4: 20226114 dns-tcp-responses-sent-ipv6: 299