--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6207727733 dns-udp-queries-received-ipv6: 881215776 dns-tcp-queries-received-ipv4: 229050772 dns-tcp-queries-received-ipv6: 68676369 dns-udp-responses-sent-ipv4: 6014010313 dns-udp-responses-sent-ipv6: 876354245 dns-tcp-responses-sent-ipv4: 223752722 dns-tcp-responses-sent-ipv6: 68757212