--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7544321098 dns-udp-queries-received-ipv6: 1330203034 dns-tcp-queries-received-ipv4: 131427514 dns-tcp-queries-received-ipv6: 29382255 dns-udp-responses-sent-ipv4: 7398284479 dns-udp-responses-sent-ipv6: 1358788034 dns-tcp-responses-sent-ipv4: 126834997 dns-tcp-responses-sent-ipv6: 28375656