--- version: rssac002v3 service: i.root-servers.net start-period: '2018-04-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6399679005 dns-udp-queries-received-ipv6: 678931630 dns-tcp-queries-received-ipv4: 127913329 dns-tcp-queries-received-ipv6: 15327800 dns-udp-responses-sent-ipv4: 6472542811 dns-udp-responses-sent-ipv6: 685186279 dns-tcp-responses-sent-ipv4: 125807513 dns-tcp-responses-sent-ipv6: 15415029