--- service: a.root-servers.net start-period: '2016-04-11T00:00:00Z' end-period: '2016-04-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5443652408 dns-udp-queries-received-ipv6: 357942767 dns-tcp-queries-received-ipv4: 82373030 dns-tcp-queries-received-ipv6: 3200502 dns-udp-responses-sent-ipv4: 5441165758 dns-udp-responses-sent-ipv6: 357054197 dns-tcp-responses-sent-ipv4: 67301673 dns-tcp-responses-sent-ipv6: 278909