--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7290901602 dns-udp-queries-received-ipv6: 1318657826 dns-tcp-queries-received-ipv4: 139397563 dns-tcp-queries-received-ipv6: 33612305 dns-udp-responses-sent-ipv4: 7192647102 dns-udp-responses-sent-ipv6: 1319845895 dns-tcp-responses-sent-ipv4: 132778173 dns-tcp-responses-sent-ipv6: 31251591