--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5927418718 dns-udp-queries-received-ipv6: 875661458 dns-tcp-queries-received-ipv4: 447250000 dns-tcp-queries-received-ipv6: 114134871 dns-udp-responses-sent-ipv4: 4416007882 dns-udp-responses-sent-ipv6: 823981692 dns-tcp-responses-sent-ipv4: 371324174 dns-tcp-responses-sent-ipv6: 103418494