--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5224982590 dns-udp-queries-received-ipv6: 1007639862 dns-tcp-queries-received-ipv4: 119223836 dns-tcp-queries-received-ipv6: 26825437 dns-udp-responses-sent-ipv4: 5148498024 dns-udp-responses-sent-ipv6: 1011333997 dns-tcp-responses-sent-ipv4: 115403569 dns-tcp-responses-sent-ipv6: 26066553