--- service: a.root-servers.net start-period: '2014-12-28T00:00:00Z' end-period: '2014-12-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2202521563 dns-udp-queries-received-ipv6: 179226571 dns-tcp-queries-received-ipv4: 13099077 dns-tcp-queries-received-ipv6: 2345612 dns-udp-responses-sent-ipv4: 2201780856 dns-udp-responses-sent-ipv6: 179226673 dns-tcp-responses-sent-ipv4: 12145876 dns-tcp-responses-sent-ipv6: 1603422