--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5265682026 dns-udp-queries-received-ipv6: 1188292147 dns-tcp-queries-received-ipv4: 584797712 dns-tcp-queries-received-ipv6: 149411946 dns-udp-responses-sent-ipv4: 4606222192 dns-udp-responses-sent-ipv6: 1047574712 dns-tcp-responses-sent-ipv4: 548974364 dns-tcp-responses-sent-ipv6: 133522377