--- service: j.root-servers.net start-period: '2016-02-28T00:00:00Z' end-period: '2016-02-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4256477387 dns-udp-queries-received-ipv6: 433886055 dns-tcp-queries-received-ipv4: 93500642 dns-tcp-queries-received-ipv6: 2766572 dns-udp-responses-sent-ipv4: 3928444689 dns-udp-responses-sent-ipv6: 436192449 dns-tcp-responses-sent-ipv4: 81256850 dns-tcp-responses-sent-ipv6: 344232