--- service: i.root-servers.net start-period: '2013-06-26T00:00:00Z' end-period: '2013-06-27T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1446178798 dns-udp-queries-received-ipv6: 75023101 dns-tcp-queries-received-ipv4: 1931660 dns-tcp-queries-received-ipv6: 98343 dns-udp-responses-sent-ipv4: 1452384429 dns-udp-responses-sent-ipv6: 79694029 dns-tcp-responses-sent-ipv4: 2054140 dns-tcp-responses-sent-ipv6: 100311