--- version: rssac002v3 service: a.root-servers.net start-period: '2017-06-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3995278290 dns-udp-queries-received-ipv6: 443670384 dns-tcp-queries-received-ipv4: 172355202 dns-tcp-queries-received-ipv6: 8870075 dns-udp-responses-sent-ipv4: 3993921332 dns-udp-responses-sent-ipv6: 443639084 dns-tcp-responses-sent-ipv4: 172475209 dns-tcp-responses-sent-ipv6: 8968884