--- version: rssac002v3 service: i.root-servers.net start-period: '2019-06-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 516130390 dns-udp-queries-received-ipv6: 174218845 dns-tcp-queries-received-ipv4: 6158560 dns-tcp-queries-received-ipv6: 806009 dns-udp-responses-sent-ipv4: 515706372 dns-udp-responses-sent-ipv6: 173730071 dns-tcp-responses-sent-ipv4: 5774435 dns-tcp-responses-sent-ipv6: 848568