--- service: a.root-servers.net start-period: '2015-11-22T00:00:00Z' end-period: '2015-11-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2850813213 dns-udp-queries-received-ipv6: 260746399 dns-tcp-queries-received-ipv4: 19882440 dns-tcp-queries-received-ipv6: 1609258 dns-udp-responses-sent-ipv4: 2855459098 dns-udp-responses-sent-ipv6: 261570025 dns-tcp-responses-sent-ipv4: 16035906 dns-tcp-responses-sent-ipv6: 265301