--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5475912167 dns-udp-queries-received-ipv6: 1017503464 dns-tcp-queries-received-ipv4: 508844119 dns-tcp-queries-received-ipv6: 144214519 dns-udp-responses-sent-ipv4: 4769933512 dns-udp-responses-sent-ipv6: 923753702 dns-tcp-responses-sent-ipv4: 415505905 dns-tcp-responses-sent-ipv6: 123757438