--- service: j.root-servers.net start-period: '2015-12-22T00:00:00Z' end-period: '2015-12-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3569627197 dns-udp-queries-received-ipv6: 454496446 dns-tcp-queries-received-ipv4: 73742427 dns-tcp-queries-received-ipv6: 1631097 dns-udp-responses-sent-ipv4: 3463389825 dns-udp-responses-sent-ipv6: 454897356 dns-tcp-responses-sent-ipv4: 67695210 dns-tcp-responses-sent-ipv6: 216788