--- service: i.root-servers.net start-period: '2015-10-24T00:00:00Z' end-period: '2015-10-25T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3862310291 dns-udp-queries-received-ipv6: 312542673 dns-tcp-queries-received-ipv4: 14132571 dns-tcp-queries-received-ipv6: 440531 dns-udp-responses-sent-ipv4: 3815113890 dns-udp-responses-sent-ipv6: 312481613 dns-tcp-responses-sent-ipv4: 14178477 dns-tcp-responses-sent-ipv6: 445528