--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6592634191 dns-udp-queries-received-ipv6: 1267077114 dns-tcp-queries-received-ipv4: 116767128 dns-tcp-queries-received-ipv6: 29166044 dns-udp-responses-sent-ipv4: 6456196261 dns-udp-responses-sent-ipv6: 1276459834 dns-tcp-responses-sent-ipv4: 111783320 dns-tcp-responses-sent-ipv6: 27545994