--- service: a.root-servers.net start-period: '2015-11-25T00:00:00Z' end-period: '2015-11-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4026475766 dns-udp-queries-received-ipv6: 315180581 dns-tcp-queries-received-ipv4: 33035058 dns-tcp-queries-received-ipv6: 1900238 dns-udp-responses-sent-ipv4: 4054479488 dns-udp-responses-sent-ipv6: 318745667 dns-tcp-responses-sent-ipv4: 26568917 dns-tcp-responses-sent-ipv6: 269592