--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6640038929 dns-udp-queries-received-ipv6: 873949367 dns-tcp-queries-received-ipv4: 333588449 dns-tcp-queries-received-ipv6: 89383302 dns-udp-responses-sent-ipv4: 6342305812 dns-udp-responses-sent-ipv6: 822276023 dns-tcp-responses-sent-ipv4: 234343388 dns-tcp-responses-sent-ipv6: 59384853