--- version: rssac002v3 service: i.root-servers.net start-period: '2020-12-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4821859923 dns-udp-queries-received-ipv6: 1098513976 dns-tcp-queries-received-ipv4: 567478950 dns-tcp-queries-received-ipv6: 156012401 dns-udp-responses-sent-ipv4: 3875466951 dns-udp-responses-sent-ipv6: 981321825 dns-tcp-responses-sent-ipv4: 456345210 dns-tcp-responses-sent-ipv6: 143819351