--- service: i.root-servers.net start-period: '2016-01-14T00:00:00Z' end-period: '2016-01-15T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4820072505 dns-udp-queries-received-ipv6: 333711873 dns-tcp-queries-received-ipv4: 31022479 dns-tcp-queries-received-ipv6: 802127 dns-udp-responses-sent-ipv4: 4747600980 dns-udp-responses-sent-ipv6: 337491074 dns-tcp-responses-sent-ipv4: 31086437 dns-tcp-responses-sent-ipv6: 807969