--- service: a.root-servers.net start-period: '2013-10-15T00:00:00Z' end-period: '2013-10-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1649177440 dns-udp-queries-received-ipv6: 95830319 dns-tcp-queries-received-ipv4: 8505193 dns-tcp-queries-received-ipv6: 1799310 dns-udp-responses-sent-ipv4: 1648806632 dns-udp-responses-sent-ipv6: 95763706 dns-tcp-responses-sent-ipv4: 9132621 dns-tcp-responses-sent-ipv6: 17097