--- version: rssac002v3 service: j.root-servers.net start-period: '2019-02-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6847152760 dns-udp-queries-received-ipv6: 755499358 dns-tcp-queries-received-ipv4: 555147564 dns-tcp-queries-received-ipv6: 37092107 dns-udp-responses-sent-ipv4: 6408996852 dns-udp-responses-sent-ipv6: 752421149 dns-tcp-responses-sent-ipv4: 401292270 dns-tcp-responses-sent-ipv6: 36771997