--- version: rssac002v3 service: j.root-servers.net start-period: '2019-01-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6558597597 dns-udp-queries-received-ipv6: 890923090 dns-tcp-queries-received-ipv4: 333158851 dns-tcp-queries-received-ipv6: 85540787 dns-udp-responses-sent-ipv4: 6261667198 dns-udp-responses-sent-ipv6: 841011732 dns-tcp-responses-sent-ipv4: 238987082 dns-tcp-responses-sent-ipv6: 59771272