--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7067789829 dns-udp-queries-received-ipv6: 1301460541 dns-tcp-queries-received-ipv4: 125167932 dns-tcp-queries-received-ipv6: 31669877 dns-udp-responses-sent-ipv4: 6979628242 dns-udp-responses-sent-ipv6: 1312768837 dns-tcp-responses-sent-ipv4: 120636896 dns-tcp-responses-sent-ipv6: 30272305