--- version: rssac002v3 service: m.root-servers.net start-period: '2019-06-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3860038617 dns-udp-queries-received-ipv6: 925799773 dns-udp-responses-sent-ipv4: 3656125966 dns-udp-responses-sent-ipv6: 856927673 dns-tcp-queries-received-ipv4: 184250973 dns-tcp-queries-received-ipv6: 60085201 dns-tcp-responses-sent-ipv4: 183844866 dns-tcp-responses-sent-ipv6: 60131444