--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5357389378 dns-udp-queries-received-ipv6: 1051712455 dns-tcp-queries-received-ipv4: 494321294 dns-tcp-queries-received-ipv6: 120500253 dns-udp-responses-sent-ipv4: 4633345346 dns-udp-responses-sent-ipv6: 1034462912 dns-tcp-responses-sent-ipv4: 421221140 dns-tcp-responses-sent-ipv6: 112489074