--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4735965546 dns-udp-queries-received-ipv6: 1070190264 dns-tcp-queries-received-ipv4: 469987721 dns-tcp-queries-received-ipv6: 153681027 dns-udp-responses-sent-ipv4: 3840238762 dns-udp-responses-sent-ipv6: 972907919 dns-tcp-responses-sent-ipv4: 344675529 dns-tcp-responses-sent-ipv6: 138042792