--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6530030398 dns-udp-queries-received-ipv6: 1182295508 dns-tcp-queries-received-ipv4: 126219129 dns-tcp-queries-received-ipv6: 35715792 dns-udp-responses-sent-ipv4: 6433179728 dns-udp-responses-sent-ipv6: 1200405026 dns-tcp-responses-sent-ipv4: 121767872 dns-tcp-responses-sent-ipv6: 33969932