--- service: j.root-servers.net start-period: '2014-09-21T00:00:00Z' end-period: '2014-09-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2663259290 dns-udp-queries-received-ipv6: 194937627 dns-tcp-queries-received-ipv4: 24828629 dns-tcp-queries-received-ipv6: 3036980 dns-udp-responses-sent-ipv4: 2651090087 dns-udp-responses-sent-ipv6: 194617499 dns-tcp-responses-sent-ipv4: 25123036 dns-tcp-responses-sent-ipv6: 2647271