--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6476145753 dns-udp-queries-received-ipv6: 1169775016 dns-tcp-queries-received-ipv4: 183506421 dns-tcp-queries-received-ipv6: 36189396 dns-udp-responses-sent-ipv4: 6325551947 dns-udp-responses-sent-ipv6: 1168876867 dns-tcp-responses-sent-ipv4: 179889447 dns-tcp-responses-sent-ipv6: 37667268