--- version: rssac002v3 service: a.root-servers.net start-period: '2020-01-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7017413800 dns-udp-queries-received-ipv6: 917949674 dns-tcp-queries-received-ipv4: 289433728 dns-tcp-queries-received-ipv6: 73274349 dns-udp-responses-sent-ipv4: 6812316127 dns-udp-responses-sent-ipv6: 911779742 dns-tcp-responses-sent-ipv4: 282268136 dns-tcp-responses-sent-ipv6: 73385976