--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6731971485 dns-udp-queries-received-ipv6: 1351698843 dns-tcp-queries-received-ipv4: 150004503 dns-tcp-queries-received-ipv6: 37168052 dns-udp-responses-sent-ipv4: 6636366760 dns-udp-responses-sent-ipv6: 1366285272 dns-tcp-responses-sent-ipv4: 143069069 dns-tcp-responses-sent-ipv6: 34087214