--- version: rssac002v3 service: a.root-servers.net start-period: '2017-05-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3958422673 dns-udp-queries-received-ipv6: 385199386 dns-tcp-queries-received-ipv4: 168892540 dns-tcp-queries-received-ipv6: 8772096 dns-udp-responses-sent-ipv4: 3957064120 dns-udp-responses-sent-ipv6: 385098644 dns-tcp-responses-sent-ipv4: 168837829 dns-tcp-responses-sent-ipv6: 8869116