--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6851405914 dns-udp-queries-received-ipv6: 898209726 dns-tcp-queries-received-ipv4: 461105886 dns-tcp-queries-received-ipv6: 80249377 dns-udp-responses-sent-ipv4: 6439539836 dns-udp-responses-sent-ipv6: 849795633 dns-tcp-responses-sent-ipv4: 299263538 dns-tcp-responses-sent-ipv6: 57449912