--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5600605531 dns-udp-queries-received-ipv6: 1083921488 dns-tcp-queries-received-ipv4: 491837067 dns-tcp-queries-received-ipv6: 122043145 dns-udp-responses-sent-ipv4: 4853074589 dns-udp-responses-sent-ipv6: 1029553062 dns-tcp-responses-sent-ipv4: 434557898 dns-tcp-responses-sent-ipv6: 115798551