--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5371045394 dns-udp-queries-received-ipv6: 1006166610 dns-tcp-queries-received-ipv4: 190111032 dns-tcp-queries-received-ipv6: 80837746 dns-udp-responses-sent-ipv4: 5206134604 dns-udp-responses-sent-ipv6: 983352028 dns-tcp-responses-sent-ipv4: 187414208 dns-tcp-responses-sent-ipv6: 80788510