--- version: rssac002v3 service: a.root-servers.net start-period: '2019-02-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5220782310 dns-udp-queries-received-ipv6: 782048012 dns-tcp-queries-received-ipv4: 161205186 dns-tcp-queries-received-ipv6: 33848957 dns-udp-responses-sent-ipv4: 5112755990 dns-udp-responses-sent-ipv6: 781625546 dns-tcp-responses-sent-ipv4: 158154463 dns-tcp-responses-sent-ipv6: 31557773