--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5413800521 dns-udp-queries-received-ipv6: 1055384546 dns-tcp-queries-received-ipv4: 113940202 dns-tcp-queries-received-ipv6: 26365411 dns-udp-responses-sent-ipv4: 5350957183 dns-udp-responses-sent-ipv6: 1053678728 dns-tcp-responses-sent-ipv4: 108579031 dns-tcp-responses-sent-ipv6: 25608446