--- version: rssac002v3 service: j.root-servers.net start-period: '2019-02-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6258439274 dns-udp-queries-received-ipv6: 710942909 dns-tcp-queries-received-ipv4: 411313349 dns-tcp-queries-received-ipv6: 37048116 dns-udp-responses-sent-ipv4: 5901028019 dns-udp-responses-sent-ipv6: 708679242 dns-tcp-responses-sent-ipv4: 326825798 dns-tcp-responses-sent-ipv6: 34980059