--- service: a.root-servers.net start-period: '2016-02-22T00:00:00Z' end-period: '2016-02-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5391983569 dns-udp-queries-received-ipv6: 342018754 dns-tcp-queries-received-ipv4: 80689324 dns-tcp-queries-received-ipv6: 3310797 dns-udp-responses-sent-ipv4: 5384419461 dns-udp-responses-sent-ipv6: 342953594 dns-tcp-responses-sent-ipv4: 69032602 dns-tcp-responses-sent-ipv6: 340990