--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5360943738 dns-udp-queries-received-ipv6: 915037354 dns-tcp-queries-received-ipv4: 503177256 dns-tcp-queries-received-ipv6: 125158257 dns-udp-responses-sent-ipv4: 4667648826 dns-udp-responses-sent-ipv6: 853850299 dns-tcp-responses-sent-ipv4: 407476740 dns-tcp-responses-sent-ipv6: 111723354