--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4670554183 dns-udp-queries-received-ipv6: 994521996 dns-tcp-queries-received-ipv4: 411237044 dns-tcp-queries-received-ipv6: 135880992 dns-udp-responses-sent-ipv4: 3794561287 dns-udp-responses-sent-ipv6: 925406782 dns-tcp-responses-sent-ipv4: 352547343 dns-tcp-responses-sent-ipv6: 134394830