--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4624876623 dns-udp-queries-received-ipv6: 887504438 dns-tcp-queries-received-ipv4: 435748013 dns-tcp-queries-received-ipv6: 134734753 dns-udp-responses-sent-ipv4: 3868394325 dns-udp-responses-sent-ipv6: 817025044 dns-tcp-responses-sent-ipv4: 370349292 dns-tcp-responses-sent-ipv6: 127954384