--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4857977838 dns-udp-queries-received-ipv6: 901734911 dns-tcp-queries-received-ipv4: 475499760 dns-tcp-queries-received-ipv6: 129507087 dns-udp-responses-sent-ipv4: 3855745753 dns-udp-responses-sent-ipv6: 839444434 dns-tcp-responses-sent-ipv4: 352785009 dns-tcp-responses-sent-ipv6: 118793305