--- version: rssac002v3 service: a.root-servers.net start-period: '2018-12-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4444747105 dns-udp-queries-received-ipv6: 689436987 dns-tcp-queries-received-ipv4: 128019975 dns-tcp-queries-received-ipv6: 31362450 dns-udp-responses-sent-ipv4: 4352822718 dns-udp-responses-sent-ipv6: 688957591 dns-tcp-responses-sent-ipv4: 124462930 dns-tcp-responses-sent-ipv6: 31054327