--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6297672831 dns-udp-queries-received-ipv6: 1171523483 dns-tcp-queries-received-ipv4: 143226812 dns-tcp-queries-received-ipv6: 37723982 dns-udp-responses-sent-ipv4: 6186648354 dns-udp-responses-sent-ipv6: 1158897871 dns-tcp-responses-sent-ipv4: 137133892 dns-tcp-responses-sent-ipv6: 34607882