--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2920355226 dns-udp-queries-received-ipv6: 627056368 dns-tcp-queries-received-ipv4: 42044971 dns-tcp-queries-received-ipv6: 6722638 dns-udp-responses-sent-ipv4: 2935666419 dns-udp-responses-sent-ipv6: 644604103 dns-tcp-responses-sent-ipv4: 40095199 dns-tcp-responses-sent-ipv6: 6474649