--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4790266444 dns-udp-queries-received-ipv6: 865150387 dns-tcp-queries-received-ipv4: 469914041 dns-tcp-queries-received-ipv6: 115102359 dns-udp-responses-sent-ipv4: 4227161090 dns-udp-responses-sent-ipv6: 842325421 dns-tcp-responses-sent-ipv4: 417959340 dns-tcp-responses-sent-ipv6: 110374326