--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6796694643 dns-udp-queries-received-ipv6: 1424145113 dns-tcp-queries-received-ipv4: 155330362 dns-tcp-queries-received-ipv6: 34188765 dns-udp-responses-sent-ipv4: 6698340071 dns-udp-responses-sent-ipv6: 1419089374 dns-tcp-responses-sent-ipv4: 149026175 dns-tcp-responses-sent-ipv6: 31413366