--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6777111803 dns-udp-queries-received-ipv6: 884146819 dns-tcp-queries-received-ipv4: 499127000 dns-tcp-queries-received-ipv6: 105013036 dns-udp-responses-sent-ipv4: 6362333213 dns-udp-responses-sent-ipv6: 818160454 dns-tcp-responses-sent-ipv4: 335537246 dns-tcp-responses-sent-ipv6: 72034927