--- version: rssac002v3 service: j.root-servers.net start-period: '2018-12-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6497869075 dns-udp-queries-received-ipv6: 790402675 dns-tcp-queries-received-ipv4: 491256779 dns-tcp-queries-received-ipv6: 50275954 dns-udp-responses-sent-ipv4: 5956716938 dns-udp-responses-sent-ipv6: 757317665 dns-tcp-responses-sent-ipv4: 306779189 dns-tcp-responses-sent-ipv6: 35390387