--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4641666575 dns-udp-queries-received-ipv6: 882090915 dns-tcp-queries-received-ipv4: 441538915 dns-tcp-queries-received-ipv6: 132489349 dns-udp-responses-sent-ipv4: 3971723388 dns-udp-responses-sent-ipv6: 817721577 dns-tcp-responses-sent-ipv4: 377699824 dns-tcp-responses-sent-ipv6: 133216698