--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4751143969 dns-udp-queries-received-ipv6: 1057159143 dns-tcp-queries-received-ipv4: 453318464 dns-tcp-queries-received-ipv6: 90549617 dns-udp-responses-sent-ipv4: 4263462706 dns-udp-responses-sent-ipv6: 1095202381 dns-tcp-responses-sent-ipv4: 410058372 dns-tcp-responses-sent-ipv6: 88712079