--- service: a.root-servers.net start-period: '2015-03-25T00:00:00Z' end-period: '2015-03-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3230631079 dns-udp-queries-received-ipv6: 289619953 dns-tcp-queries-received-ipv4: 27200698 dns-tcp-queries-received-ipv6: 2663617 dns-udp-responses-sent-ipv4: 3217797089 dns-udp-responses-sent-ipv6: 288956450 dns-tcp-responses-sent-ipv4: 22364974 dns-tcp-responses-sent-ipv6: 1203768