--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6193364223 dns-udp-queries-received-ipv6: 813076169 dns-tcp-queries-received-ipv4: 234114863 dns-tcp-queries-received-ipv6: 67690255 dns-udp-responses-sent-ipv4: 5994658360 dns-udp-responses-sent-ipv6: 812228689 dns-tcp-responses-sent-ipv4: 230971124 dns-tcp-responses-sent-ipv6: 67900579