--- version: rssac002v3 service: j.root-servers.net start-period: '2019-03-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6575550010 dns-udp-queries-received-ipv6: 998642681 dns-tcp-queries-received-ipv4: 487236765 dns-tcp-queries-received-ipv6: 70963571 dns-udp-responses-sent-ipv4: 6208742209 dns-udp-responses-sent-ipv6: 958465131 dns-tcp-responses-sent-ipv4: 376823070 dns-tcp-responses-sent-ipv6: 52029113