--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6903580130 dns-udp-queries-received-ipv6: 1400811436 dns-tcp-queries-received-ipv4: 144299663 dns-tcp-queries-received-ipv6: 35768951 dns-udp-responses-sent-ipv4: 6755872107 dns-udp-responses-sent-ipv6: 1413010901 dns-tcp-responses-sent-ipv4: 138001026 dns-tcp-responses-sent-ipv6: 32218076