--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4679805110 dns-udp-queries-received-ipv6: 843322037 dns-tcp-queries-received-ipv4: 444856571 dns-tcp-queries-received-ipv6: 110198134 dns-udp-responses-sent-ipv4: 4149190174 dns-udp-responses-sent-ipv6: 825211892 dns-tcp-responses-sent-ipv4: 396283054 dns-tcp-responses-sent-ipv6: 105920508