--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6451026943 dns-udp-queries-received-ipv6: 1153127760 dns-tcp-queries-received-ipv4: 143769762 dns-tcp-queries-received-ipv6: 38264745 dns-udp-responses-sent-ipv4: 6139560124 dns-udp-responses-sent-ipv6: 1142457784 dns-tcp-responses-sent-ipv4: 137792754 dns-tcp-responses-sent-ipv6: 35451300