--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6955833162 dns-udp-queries-received-ipv6: 913114656 dns-tcp-queries-received-ipv4: 505414972 dns-tcp-queries-received-ipv6: 104206053 dns-udp-responses-sent-ipv4: 6529275275 dns-udp-responses-sent-ipv6: 846699645 dns-tcp-responses-sent-ipv4: 347214273 dns-tcp-responses-sent-ipv6: 71126784