--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6612057416 dns-udp-queries-received-ipv6: 412767207 dns-tcp-queries-received-ipv4: 141393925 dns-tcp-queries-received-ipv6: 15858454 dns-udp-responses-sent-ipv4: 6516616253 dns-udp-responses-sent-ipv6: 412500046 dns-tcp-responses-sent-ipv4: 144589875 dns-tcp-responses-sent-ipv6: 15879305