--- version: rssac002v3 service: i.root-servers.net start-period: '2021-08-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4362764128 dns-udp-queries-received-ipv6: 847709484 dns-tcp-queries-received-ipv4: 430883489 dns-tcp-queries-received-ipv6: 70357677 dns-udp-responses-sent-ipv4: 3876516956 dns-udp-responses-sent-ipv6: 840981378 dns-tcp-responses-sent-ipv4: 395278349 dns-tcp-responses-sent-ipv6: 68588035