--- service: i.root-servers.net start-period: '2013-07-31T00:00:00Z' end-period: '2013-08-01T00:01:19Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2344063300 dns-udp-queries-received-ipv6: 150308188 dns-tcp-queries-received-ipv4: 4899782 dns-tcp-queries-received-ipv6: 192303 dns-udp-responses-sent-ipv4: 2278261115 dns-udp-responses-sent-ipv6: 150272299 dns-tcp-responses-sent-ipv4: 4894131 dns-tcp-responses-sent-ipv6: 194089