--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5598254598 dns-udp-queries-received-ipv6: 1086208376 dns-tcp-queries-received-ipv4: 135283581 dns-tcp-queries-received-ipv6: 35767509 dns-udp-responses-sent-ipv4: 5464189512 dns-udp-responses-sent-ipv6: 1071682650 dns-tcp-responses-sent-ipv4: 128811386 dns-tcp-responses-sent-ipv6: 32461654