--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5996790048 dns-udp-queries-received-ipv6: 1149295205 dns-tcp-queries-received-ipv4: 138918948 dns-tcp-queries-received-ipv6: 37548548 dns-udp-responses-sent-ipv4: 5891889932 dns-udp-responses-sent-ipv6: 1137556726 dns-tcp-responses-sent-ipv4: 133378654 dns-tcp-responses-sent-ipv6: 34462737