--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4437443967 dns-udp-queries-received-ipv6: 857953414 dns-tcp-queries-received-ipv4: 473241327 dns-tcp-queries-received-ipv6: 106857862 dns-udp-responses-sent-ipv4: 3953668452 dns-udp-responses-sent-ipv6: 870146247 dns-tcp-responses-sent-ipv4: 444072564 dns-tcp-responses-sent-ipv6: 106475997