--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6762595388 dns-udp-queries-received-ipv6: 1371741375 dns-tcp-queries-received-ipv4: 146707076 dns-tcp-queries-received-ipv6: 33380383 dns-udp-responses-sent-ipv4: 6590534924 dns-udp-responses-sent-ipv6: 1348432563 dns-tcp-responses-sent-ipv4: 139456052 dns-tcp-responses-sent-ipv6: 30433098