--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5175070608 dns-udp-queries-received-ipv6: 967126531 dns-tcp-queries-received-ipv4: 498253036 dns-tcp-queries-received-ipv6: 130187714 dns-udp-responses-sent-ipv4: 4249601746 dns-udp-responses-sent-ipv6: 892510309 dns-tcp-responses-sent-ipv4: 376944510 dns-tcp-responses-sent-ipv6: 117655114