--- service: i.root-servers.net start-period: '2013-09-24T00:00:00Z' end-period: '2013-09-25T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2387752516 dns-udp-queries-received-ipv6: 151288178 dns-tcp-queries-received-ipv4: 5663830 dns-tcp-queries-received-ipv6: 114514 dns-udp-responses-sent-ipv4: 2466100950 dns-udp-responses-sent-ipv6: 159888585 dns-tcp-responses-sent-ipv4: 5679739 dns-tcp-responses-sent-ipv6: 134228