--- version: rssac002v3 service: a.root-servers.net start-period: '2018-06-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6126476452 dns-udp-queries-received-ipv6: 393482050 dns-tcp-queries-received-ipv4: 123268128 dns-tcp-queries-received-ipv6: 17403215 dns-udp-responses-sent-ipv4: 5977550060 dns-udp-responses-sent-ipv6: 393187048 dns-tcp-responses-sent-ipv4: 124277503 dns-tcp-responses-sent-ipv6: 17485431