--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5826170319 dns-udp-queries-received-ipv6: 1049221284 dns-tcp-queries-received-ipv4: 160754147 dns-tcp-queries-received-ipv6: 29731235 dns-udp-responses-sent-ipv4: 5696682706 dns-udp-responses-sent-ipv6: 1048574586 dns-tcp-responses-sent-ipv4: 156657439 dns-tcp-responses-sent-ipv6: 30347076