--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6404924408 dns-udp-queries-received-ipv6: 1261351566 dns-tcp-queries-received-ipv4: 120360299 dns-tcp-queries-received-ipv6: 27590521 dns-udp-responses-sent-ipv4: 6294799831 dns-udp-responses-sent-ipv6: 1278107586 dns-tcp-responses-sent-ipv4: 115706942 dns-tcp-responses-sent-ipv6: 26664316