--- service: i.root-servers.net start-period: '2016-04-13T00:00:00Z' end-period: '2016-04-14T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4948789019 dns-udp-queries-received-ipv6: 439804466 dns-tcp-queries-received-ipv4: 25759433 dns-tcp-queries-received-ipv6: 882579 dns-udp-responses-sent-ipv4: 4871812319 dns-udp-responses-sent-ipv6: 439245816 dns-tcp-responses-sent-ipv4: 25344485 dns-tcp-responses-sent-ipv6: 886735