--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4787215902 dns-udp-queries-received-ipv6: 847200209 dns-tcp-queries-received-ipv4: 508452649 dns-tcp-queries-received-ipv6: 116539560 dns-udp-responses-sent-ipv4: 3851374926 dns-udp-responses-sent-ipv6: 774093921 dns-tcp-responses-sent-ipv4: 421634988 dns-tcp-responses-sent-ipv6: 106778222