--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6997733236 dns-udp-queries-received-ipv6: 1321091224 dns-tcp-queries-received-ipv4: 124743482 dns-tcp-queries-received-ipv6: 27843333 dns-udp-responses-sent-ipv4: 6832687505 dns-udp-responses-sent-ipv6: 1325970792 dns-tcp-responses-sent-ipv4: 120223165 dns-tcp-responses-sent-ipv6: 26786779