--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4322643489 dns-udp-queries-received-ipv6: 835479312 dns-tcp-queries-received-ipv4: 421497786 dns-tcp-queries-received-ipv6: 75284055 dns-udp-responses-sent-ipv4: 3880274476 dns-udp-responses-sent-ipv6: 816911060 dns-tcp-responses-sent-ipv4: 396773517 dns-tcp-responses-sent-ipv6: 74332376