--- version: rssac002v3 service: d.root-servers.net start-period: '2019-12-31T00:00:00Z' end-period: '2019-12-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8381125107 dns-udp-queries-received-ipv6: 1562730247 dns-tcp-queries-received-ipv4: 761527664 dns-tcp-queries-received-ipv6: 118710210 dns-udp-responses-sent-ipv4: 8381166330 dns-udp-responses-sent-ipv6: 1562684473 dns-tcp-responses-sent-ipv4: 761356047 dns-tcp-responses-sent-ipv6: 118507367