--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5989828660 dns-udp-queries-received-ipv6: 371177910 dns-tcp-queries-received-ipv4: 91950455 dns-tcp-queries-received-ipv6: 14152794 dns-udp-responses-sent-ipv4: 5905123100 dns-udp-responses-sent-ipv6: 370736313 dns-tcp-responses-sent-ipv4: 92578146 dns-tcp-responses-sent-ipv6: 14260427