--- service: i.root-servers.net start-period: '2016-02-22T00:00:00Z' end-period: '2016-02-23T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4899348799 dns-udp-queries-received-ipv6: 409590216 dns-tcp-queries-received-ipv4: 13739949 dns-tcp-queries-received-ipv6: 1308243 dns-udp-responses-sent-ipv4: 4830603343 dns-udp-responses-sent-ipv6: 408787824 dns-tcp-responses-sent-ipv4: 13543642 dns-tcp-responses-sent-ipv6: 1308661