--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4581479903 dns-udp-queries-received-ipv6: 1078477462 dns-tcp-queries-received-ipv4: 419412434 dns-tcp-queries-received-ipv6: 143998858 dns-udp-responses-sent-ipv4: 3839425562 dns-udp-responses-sent-ipv6: 1008843938 dns-tcp-responses-sent-ipv4: 336998051 dns-tcp-responses-sent-ipv6: 134844968