--- version: rssac002v3 service: j.root-servers.net start-period: '2019-02-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6639891831 dns-udp-queries-received-ipv6: 1154397255 dns-tcp-queries-received-ipv4: 314997411 dns-tcp-queries-received-ipv6: 169103517 dns-udp-responses-sent-ipv4: 6352177162 dns-udp-responses-sent-ipv6: 1025705784 dns-tcp-responses-sent-ipv4: 279044983 dns-tcp-responses-sent-ipv6: 103514644