--- version: rssac002v3 service: a.root-servers.net start-period: '2019-03-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5727259062 dns-udp-queries-received-ipv6: 875558567 dns-tcp-queries-received-ipv4: 203076867 dns-tcp-queries-received-ipv6: 29831566 dns-udp-responses-sent-ipv4: 5593633472 dns-udp-responses-sent-ipv6: 875085887 dns-tcp-responses-sent-ipv4: 199360818 dns-tcp-responses-sent-ipv6: 30060893