--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5348777171 dns-udp-queries-received-ipv6: 781317274 dns-tcp-queries-received-ipv4: 431050871 dns-tcp-queries-received-ipv6: 104526769 dns-udp-responses-sent-ipv4: 4106719927 dns-udp-responses-sent-ipv6: 741021406 dns-tcp-responses-sent-ipv4: 350438870 dns-tcp-responses-sent-ipv6: 92533694