--- version: rssac002v3 service: j.root-servers.net start-period: '2018-12-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6321215139 dns-udp-queries-received-ipv6: 747488208 dns-tcp-queries-received-ipv4: 401151924 dns-tcp-queries-received-ipv6: 54823244 dns-udp-responses-sent-ipv4: 5891174600 dns-udp-responses-sent-ipv6: 711499644 dns-tcp-responses-sent-ipv4: 261643423 dns-tcp-responses-sent-ipv6: 40600837