--- version: rssac002v3 service: j.root-servers.net start-period: '2019-04-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7318745180 dns-udp-queries-received-ipv6: 1030756784 dns-tcp-queries-received-ipv4: 519302679 dns-tcp-queries-received-ipv6: 73063919 dns-udp-responses-sent-ipv4: 6869171780 dns-udp-responses-sent-ipv6: 989925289 dns-tcp-responses-sent-ipv4: 398213019 dns-tcp-responses-sent-ipv6: 54027259