--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6757802357 dns-udp-queries-received-ipv6: 1266198651 dns-tcp-queries-received-ipv4: 124114366 dns-tcp-queries-received-ipv6: 29490141 dns-udp-responses-sent-ipv4: 6687963226 dns-udp-responses-sent-ipv6: 1256534990 dns-tcp-responses-sent-ipv4: 118129833 dns-tcp-responses-sent-ipv6: 27379864