--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5456807049 dns-udp-queries-received-ipv6: 1196477354 dns-tcp-queries-received-ipv4: 608223195 dns-tcp-queries-received-ipv6: 67609311 dns-udp-responses-sent-ipv4: 4746856219 dns-udp-responses-sent-ipv6: 1107521487 dns-tcp-responses-sent-ipv4: 588603995 dns-tcp-responses-sent-ipv6: 61210796