--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5567198472 dns-udp-queries-received-ipv6: 930767073 dns-tcp-queries-received-ipv4: 456109340 dns-tcp-queries-received-ipv6: 123921653 dns-udp-responses-sent-ipv4: 4191313589 dns-udp-responses-sent-ipv6: 853715382 dns-tcp-responses-sent-ipv4: 355648241 dns-tcp-responses-sent-ipv6: 110733334