--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5548796075 dns-udp-queries-received-ipv6: 935867672 dns-tcp-queries-received-ipv4: 450782680 dns-tcp-queries-received-ipv6: 126151519 dns-udp-responses-sent-ipv4: 4138445709 dns-udp-responses-sent-ipv6: 859079706 dns-tcp-responses-sent-ipv4: 359294503 dns-tcp-responses-sent-ipv6: 114333689