--- version: rssac002v3 service: i.root-servers.net start-period: '2018-06-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4402399862 dns-udp-queries-received-ipv6: 913651029 dns-tcp-queries-received-ipv4: 111542643 dns-tcp-queries-received-ipv6: 19867252 dns-udp-responses-sent-ipv4: 4370647498 dns-udp-responses-sent-ipv6: 911289878 dns-tcp-responses-sent-ipv4: 107004818 dns-tcp-responses-sent-ipv6: 19723251