--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5727526853 dns-udp-queries-received-ipv6: 1132534199 dns-tcp-queries-received-ipv4: 103400356 dns-tcp-queries-received-ipv6: 18383698 dns-udp-responses-sent-ipv4: 5773053375 dns-udp-responses-sent-ipv6: 1181780615 dns-tcp-responses-sent-ipv4: 100908172 dns-tcp-responses-sent-ipv6: 18157180