--- version: rssac002v3 service: d.root-servers.net start-period: '2018-12-30T00:00:00Z' end-period: '2018-12-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5909572548 dns-udp-queries-received-ipv6: 1375076115 dns-tcp-queries-received-ipv4: 381004802 dns-tcp-queries-received-ipv6: 40809156 dns-udp-responses-sent-ipv4: 5909580634 dns-udp-responses-sent-ipv6: 1374858667 dns-tcp-responses-sent-ipv4: 380423573 dns-tcp-responses-sent-ipv6: 40785500