--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6862545088 dns-udp-queries-received-ipv6: 951951266 dns-tcp-queries-received-ipv4: 512676653 dns-tcp-queries-received-ipv6: 105716332 dns-udp-responses-sent-ipv4: 6428323501 dns-udp-responses-sent-ipv6: 890708464 dns-tcp-responses-sent-ipv4: 351953293 dns-tcp-responses-sent-ipv6: 74338311