--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5541689845 dns-udp-queries-received-ipv6: 1030758482 dns-tcp-queries-received-ipv4: 158100679 dns-tcp-queries-received-ipv6: 30065407 dns-udp-responses-sent-ipv4: 5418837507 dns-udp-responses-sent-ipv6: 1029715545 dns-tcp-responses-sent-ipv4: 154983993 dns-tcp-responses-sent-ipv6: 30708310