--- version: rssac002v3 service: a.root-servers.net start-period: '2017-05-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3628655742 dns-udp-queries-received-ipv6: 351066767 dns-tcp-queries-received-ipv4: 161472440 dns-tcp-queries-received-ipv6: 7544886 dns-udp-responses-sent-ipv4: 3626720971 dns-udp-responses-sent-ipv6: 351016958 dns-tcp-responses-sent-ipv4: 161447202 dns-tcp-responses-sent-ipv6: 7671347