--- service: d.root-servers.net start-period: '2016-03-28T00:00:00Z' end-period: '2016-03-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4411209345 dns-udp-queries-received-ipv6: 557618704 dns-tcp-queries-received-ipv4: 42676700 dns-tcp-queries-received-ipv6: 523529 dns-udp-responses-sent-ipv4: 4391929499 dns-udp-responses-sent-ipv6: 557346791 dns-tcp-responses-sent-ipv4: 42600454 dns-tcp-responses-sent-ipv6: 523516