--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5390737989 dns-udp-queries-received-ipv6: 1061408165 dns-tcp-queries-received-ipv4: 120931032 dns-tcp-queries-received-ipv6: 31611131 dns-udp-responses-sent-ipv4: 5326523400 dns-udp-responses-sent-ipv6: 1065019799 dns-tcp-responses-sent-ipv4: 117637010 dns-tcp-responses-sent-ipv6: 30918992