--- service: i.root-servers.net start-period: '2015-08-23T00:00:00Z' end-period: '2015-08-24T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3171685922 dns-udp-queries-received-ipv6: 249440596 dns-tcp-queries-received-ipv4: 28532991 dns-tcp-queries-received-ipv6: 362347 dns-udp-responses-sent-ipv4: 4743344860 dns-udp-responses-sent-ipv6: 249475058 dns-tcp-responses-sent-ipv4: 28567642 dns-tcp-responses-sent-ipv6: 365476