--- version: rssac002v3 service: a.root-servers.net start-period: '2019-02-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4959705079 dns-udp-queries-received-ipv6: 773451484 dns-tcp-queries-received-ipv4: 118578370 dns-tcp-queries-received-ipv6: 34224107 dns-udp-responses-sent-ipv4: 4855474967 dns-udp-responses-sent-ipv6: 772984471 dns-tcp-responses-sent-ipv4: 114701586 dns-tcp-responses-sent-ipv6: 31554562