--- version: rssac002v3 service: j.root-servers.net start-period: '2018-12-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6597590680 dns-udp-queries-received-ipv6: 789469243 dns-tcp-queries-received-ipv4: 409943619 dns-tcp-queries-received-ipv6: 52544073 dns-udp-responses-sent-ipv4: 6146889067 dns-udp-responses-sent-ipv6: 754884818 dns-tcp-responses-sent-ipv4: 271979370 dns-tcp-responses-sent-ipv6: 40217334