--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6634354748 dns-udp-queries-received-ipv6: 849590034 dns-tcp-queries-received-ipv4: 453216539 dns-tcp-queries-received-ipv6: 94949726 dns-udp-responses-sent-ipv4: 6261802623 dns-udp-responses-sent-ipv6: 791942696 dns-tcp-responses-sent-ipv4: 310145225 dns-tcp-responses-sent-ipv6: 66207265