--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5685948644 dns-udp-queries-received-ipv6: 1070602160 dns-tcp-queries-received-ipv4: 138434425 dns-tcp-queries-received-ipv6: 29356551 dns-udp-responses-sent-ipv4: 5554795695 dns-udp-responses-sent-ipv6: 1070154973 dns-tcp-responses-sent-ipv4: 134571837 dns-tcp-responses-sent-ipv6: 29916847