--- service: i.root-servers.net start-period: '2013-09-30T00:00:00Z' end-period: '2013-10-01T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2296783727 dns-udp-queries-received-ipv6: 133772555 dns-tcp-queries-received-ipv4: 5706984 dns-tcp-queries-received-ipv6: 139883 dns-udp-responses-sent-ipv4: 2375373385 dns-udp-responses-sent-ipv6: 142552780 dns-tcp-responses-sent-ipv4: 5764275 dns-tcp-responses-sent-ipv6: 159659