--- version: rssac002v3 service: a.root-servers.net start-period: '2019-03-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5796223612 dns-udp-queries-received-ipv6: 755030195 dns-tcp-queries-received-ipv4: 213194897 dns-tcp-queries-received-ipv6: 35117956 dns-udp-responses-sent-ipv4: 5682911379 dns-udp-responses-sent-ipv6: 754573034 dns-tcp-responses-sent-ipv4: 209552328 dns-tcp-responses-sent-ipv6: 32859414