--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4437110821 dns-udp-queries-received-ipv6: 299812548 dns-tcp-queries-received-ipv4: 117552403 dns-tcp-queries-received-ipv6: 13615606 dns-udp-responses-sent-ipv4: 4382994811 dns-udp-responses-sent-ipv6: 299339861 dns-tcp-responses-sent-ipv4: 118403970 dns-tcp-responses-sent-ipv6: 13669542