--- version: rssac002v3 service: k.root-servers.net start-period: 2018-12-31T00:00:00Z metric: traffic-volume dns-udp-queries-received-ipv4: 4747495071 dns-udp-queries-received-ipv6: 1318342620 dns-tcp-queries-received-ipv4: 109791301 dns-tcp-queries-received-ipv6: 16730014 dns-udp-responses-sent-ipv4: 4745828249 dns-udp-responses-sent-ipv6: 1317592640 dns-tcp-responses-sent-ipv4: 103754583 dns-tcp-responses-sent-ipv6: 15078799