--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1919842723 dns-udp-queries-received-ipv6: 487199653 dns-tcp-queries-received-ipv4: 20862809 dns-tcp-queries-received-ipv6: 4433921 dns-udp-responses-sent-ipv4: 1903451279 dns-udp-responses-sent-ipv6: 487846003 dns-tcp-responses-sent-ipv4: 19550046 dns-tcp-responses-sent-ipv6: 4190778