--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5267495501 dns-udp-queries-received-ipv6: 1134365337 dns-tcp-queries-received-ipv4: 102645529 dns-tcp-queries-received-ipv6: 19190308 dns-udp-responses-sent-ipv4: 5280539513 dns-udp-responses-sent-ipv6: 1157987347 dns-tcp-responses-sent-ipv4: 100079402 dns-tcp-responses-sent-ipv6: 18966807