--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5292709160 dns-udp-queries-received-ipv6: 1002778841 dns-tcp-queries-received-ipv4: 491960929 dns-tcp-queries-received-ipv6: 116210925 dns-udp-responses-sent-ipv4: 4552536480 dns-udp-responses-sent-ipv6: 960042766 dns-tcp-responses-sent-ipv4: 409167828 dns-tcp-responses-sent-ipv6: 104572078