--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5576260312 dns-udp-queries-received-ipv6: 1088493663 dns-tcp-queries-received-ipv4: 123524569 dns-tcp-queries-received-ipv6: 28721239 dns-udp-responses-sent-ipv4: 5507437029 dns-udp-responses-sent-ipv6: 1094680979 dns-tcp-responses-sent-ipv4: 120263710 dns-tcp-responses-sent-ipv6: 28282082