--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3422423294 dns-udp-queries-received-ipv6: 398745399 dns-tcp-queries-received-ipv4: 93542254 dns-tcp-queries-received-ipv6: 13894586 dns-udp-responses-sent-ipv4: 3417946895 dns-udp-responses-sent-ipv6: 398731677 dns-tcp-responses-sent-ipv4: 92857340 dns-tcp-responses-sent-ipv6: 14018298