--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6999513256 dns-udp-queries-received-ipv6: 1307464664 dns-tcp-queries-received-ipv4: 123909682 dns-tcp-queries-received-ipv6: 26003366 dns-udp-responses-sent-ipv4: 6853889688 dns-udp-responses-sent-ipv6: 1308355750 dns-tcp-responses-sent-ipv4: 119605827 dns-tcp-responses-sent-ipv6: 25105250