--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4919377798 dns-udp-queries-received-ipv6: 857400030 dns-tcp-queries-received-ipv4: 488778730 dns-tcp-queries-received-ipv6: 130860123 dns-udp-responses-sent-ipv4: 3979392217 dns-udp-responses-sent-ipv6: 794805020 dns-tcp-responses-sent-ipv4: 358903609 dns-tcp-responses-sent-ipv6: 117020476