--- version: rssac002v3 service: a.root-servers.net start-period: '2017-12-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3387183758 dns-udp-queries-received-ipv6: 408501429 dns-tcp-queries-received-ipv4: 97716183 dns-tcp-queries-received-ipv6: 12542155 dns-udp-responses-sent-ipv4: 3385385328 dns-udp-responses-sent-ipv6: 408482857 dns-tcp-responses-sent-ipv4: 97829914 dns-tcp-responses-sent-ipv6: 12687390