--- service: a.root-servers.net start-period: '2015-12-06T00:00:00Z' end-period: '2015-12-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4088972385 dns-udp-queries-received-ipv6: 292146383 dns-tcp-queries-received-ipv4: 39224559 dns-tcp-queries-received-ipv6: 1859362 dns-udp-responses-sent-ipv4: 4074849055 dns-udp-responses-sent-ipv6: 293639776 dns-tcp-responses-sent-ipv4: 33273169 dns-tcp-responses-sent-ipv6: 277283