--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4703031018 dns-udp-queries-received-ipv6: 936264751 dns-tcp-queries-received-ipv4: 498850133 dns-tcp-queries-received-ipv6: 109067755 dns-udp-responses-sent-ipv4: 4086823416 dns-udp-responses-sent-ipv6: 928576411 dns-tcp-responses-sent-ipv4: 446362039 dns-tcp-responses-sent-ipv6: 108965467