--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5124794464 dns-udp-queries-received-ipv6: 1000340960 dns-tcp-queries-received-ipv4: 440859901 dns-tcp-queries-received-ipv6: 134415542 dns-udp-responses-sent-ipv4: 4305654869 dns-udp-responses-sent-ipv6: 931263892 dns-tcp-responses-sent-ipv4: 363183644 dns-tcp-responses-sent-ipv6: 135781418