--- service: a.root-servers.net start-period: '2016-04-15T00:00:00Z' end-period: '2016-04-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5348381142 dns-udp-queries-received-ipv6: 353969254 dns-tcp-queries-received-ipv4: 69747223 dns-tcp-queries-received-ipv6: 3413758 dns-udp-responses-sent-ipv4: 5347986222 dns-udp-responses-sent-ipv6: 353606817 dns-tcp-responses-sent-ipv4: 58905323 dns-tcp-responses-sent-ipv6: 276069