--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7738971187 dns-udp-queries-received-ipv6: 1373466239 dns-tcp-queries-received-ipv4: 147368156 dns-tcp-queries-received-ipv6: 37687837 dns-udp-responses-sent-ipv4: 7824468657 dns-udp-responses-sent-ipv6: 1398612048 dns-tcp-responses-sent-ipv4: 141981058 dns-tcp-responses-sent-ipv6: 34575617