--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6061344525 dns-udp-queries-received-ipv6: 1137391774 dns-tcp-queries-received-ipv4: 142081726 dns-tcp-queries-received-ipv6: 37659453 dns-udp-responses-sent-ipv4: 6001032918 dns-udp-responses-sent-ipv6: 1134392568 dns-tcp-responses-sent-ipv4: 136889758 dns-tcp-responses-sent-ipv6: 35881083