--- version: rssac002v3 service: a.root-servers.net start-period: '2018-11-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5085873168 dns-udp-queries-received-ipv6: 835856800 dns-tcp-queries-received-ipv4: 158330375 dns-tcp-queries-received-ipv6: 31858172 dns-udp-responses-sent-ipv4: 4976546298 dns-udp-responses-sent-ipv6: 835154123 dns-tcp-responses-sent-ipv4: 155539356 dns-tcp-responses-sent-ipv6: 32052858