--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5296097013 dns-udp-queries-received-ipv6: 987741177 dns-tcp-queries-received-ipv4: 555816757 dns-tcp-queries-received-ipv6: 131458601 dns-udp-responses-sent-ipv4: 4172558521 dns-udp-responses-sent-ipv6: 879759328 dns-tcp-responses-sent-ipv4: 431954012 dns-tcp-responses-sent-ipv6: 121757975