--- version: rssac002v3 service: a.root-servers.net start-period: '2017-12-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5823014415 dns-udp-queries-received-ipv6: 398629069 dns-tcp-queries-received-ipv4: 111476561 dns-tcp-queries-received-ipv6: 13366685 dns-udp-responses-sent-ipv4: 5820099176 dns-udp-responses-sent-ipv6: 398613353 dns-tcp-responses-sent-ipv4: 111830167 dns-tcp-responses-sent-ipv6: 13473448