--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4936683747 dns-udp-queries-received-ipv6: 967894593 dns-tcp-queries-received-ipv4: 423757024 dns-tcp-queries-received-ipv6: 126295347 dns-udp-responses-sent-ipv4: 4248671515 dns-udp-responses-sent-ipv6: 904878752 dns-tcp-responses-sent-ipv4: 361976331 dns-tcp-responses-sent-ipv6: 108062492