--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2028878407 dns-udp-queries-received-ipv6: 487200594 dns-tcp-queries-received-ipv4: 20439881 dns-tcp-queries-received-ipv6: 4214248 dns-udp-responses-sent-ipv4: 2024297628 dns-udp-responses-sent-ipv6: 491376396 dns-tcp-responses-sent-ipv4: 19350140 dns-tcp-responses-sent-ipv6: 3995249