--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5328298098 dns-udp-queries-received-ipv6: 1085150502 dns-tcp-queries-received-ipv4: 126819467 dns-tcp-queries-received-ipv6: 30442804 dns-udp-responses-sent-ipv4: 5246345111 dns-udp-responses-sent-ipv6: 1088522855 dns-tcp-responses-sent-ipv4: 124429668 dns-tcp-responses-sent-ipv6: 29520160