--- version: rssac002v3 service: a.root-servers.net start-period: '2019-05-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5815737082 dns-udp-queries-received-ipv6: 957321821 dns-tcp-queries-received-ipv4: 183361163 dns-tcp-queries-received-ipv6: 31738317 dns-udp-responses-sent-ipv4: 5682448119 dns-udp-responses-sent-ipv6: 956205278 dns-tcp-responses-sent-ipv4: 179233010 dns-tcp-responses-sent-ipv6: 32234262