--- service: i.root-servers.net start-period: '2015-11-25T09:05:59Z' end-period: '2015-11-26T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2858995766 dns-udp-queries-received-ipv6: 229551448 dns-tcp-queries-received-ipv4: 14825099 dns-tcp-queries-received-ipv6: 497334 dns-udp-responses-sent-ipv4: 2832193645 dns-udp-responses-sent-ipv6: 230776700 dns-tcp-responses-sent-ipv4: 14793619 dns-tcp-responses-sent-ipv6: 498999