--- version: rssac002v3 service: j.root-servers.net start-period: '2019-02-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6928840617 dns-udp-queries-received-ipv6: 1124939292 dns-tcp-queries-received-ipv4: 411639042 dns-tcp-queries-received-ipv6: 152997995 dns-udp-responses-sent-ipv4: 6602581418 dns-udp-responses-sent-ipv6: 1012365905 dns-tcp-responses-sent-ipv4: 332245992 dns-tcp-responses-sent-ipv6: 95188201