--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6029523756 dns-udp-queries-received-ipv6: 1127417844 dns-tcp-queries-received-ipv4: 134005330 dns-tcp-queries-received-ipv6: 33424379 dns-udp-responses-sent-ipv4: 5910433357 dns-udp-responses-sent-ipv6: 1114459273 dns-tcp-responses-sent-ipv4: 128353393 dns-tcp-responses-sent-ipv6: 30572985