--- version: rssac002v3 service: a.root-servers.net start-period: '2019-03-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5734981927 dns-udp-queries-received-ipv6: 777451194 dns-tcp-queries-received-ipv4: 163560608 dns-tcp-queries-received-ipv6: 34503679 dns-udp-responses-sent-ipv4: 5622179044 dns-udp-responses-sent-ipv6: 776481711 dns-tcp-responses-sent-ipv4: 159924371 dns-tcp-responses-sent-ipv6: 31989577