--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5193203882 dns-udp-queries-received-ipv6: 1103945863 dns-tcp-queries-received-ipv4: 565159945 dns-tcp-queries-received-ipv6: 148714674 dns-udp-responses-sent-ipv4: 4565482815 dns-udp-responses-sent-ipv6: 963670252 dns-tcp-responses-sent-ipv4: 533665418 dns-tcp-responses-sent-ipv6: 132601186