--- service: i.root-servers.net start-period: '2015-08-11T00:00:00Z' end-period: '2015-08-12T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5338929495 dns-udp-queries-received-ipv6: 287167951 dns-tcp-queries-received-ipv4: 20065370 dns-tcp-queries-received-ipv6: 373163 dns-udp-responses-sent-ipv4: 5293737798 dns-udp-responses-sent-ipv6: 289527623 dns-tcp-responses-sent-ipv4: 19942434 dns-tcp-responses-sent-ipv6: 376685