--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7308501858 dns-udp-queries-received-ipv6: 1276690269 dns-tcp-queries-received-ipv4: 139775175 dns-tcp-queries-received-ipv6: 30637765 dns-udp-responses-sent-ipv4: 7208199721 dns-udp-responses-sent-ipv6: 1298369166 dns-tcp-responses-sent-ipv4: 135344485 dns-tcp-responses-sent-ipv6: 29352254